Things we don't really talk about much on Ne Zha 2 (and the first movie:
1. Ne Zha may seem very impulsive once his temper is on fire, but he can be very focused and clear minded on his responsibilities and loyalties no matter what, as shown when he could've just let Ao Bing die out of vengeance for his dad, but he still rushed to beat Lady Shi up so he can get Ao Bing's problem done for and so he can focus on enacting revenge on Ao Guang
2. In that similar vein it could be interpreted that Ne Zha was taking a gamble in destroying his body to free himself from the curse in the cauldron (instead of following his mom in death), since he may have taken Ao Guang's words that the Samadhi fire in the cauldron is compatible with his own seriously, so even despite the raging grief and agony he still tried his hardest to free himself so he can free his dad and Ao Bing and everyone later
3. Ao Bing learns as quickly as Ne Zha (who literally mastered shapeshifting without his master's help very quickly) and while it's not shown when exactly Ao Bing too learnt shapeshifting, it's clear that with their special spiritual power status they just learn new and difficult skills fast
4. Lady Yin and Li Jing really share a powerful bond where even if Lady Yin spent her last moments with Ne Zha, it's very understandable that she still loves her husband too even without having a chance to say goodbye, and if you're a couple who already gave birth to three outstanding godly children, pretty sure you already knew what your wife was thinking and Li Jing let his wife spend her last moments with her son as he knows all along Ne Zha is her top priority and that's okay, it's called selfless love in unspoken communication
5. Also it must be said that Li Jing does subconsciously listen to his wife, as in the first movie he was persuaded to let Tai Yi Zhen Ren try to kill Ne Zha at birth until his wife came to protect him, and Li Jing was persuaded that no matter what Ne Zha is still his son, and when at the end of the first movie Ne Zha said his only regret with his dad is never having a chance to play Jianzi with him, which broke him as he realised he should've listened to Lady Yin in spending more time to make Ne Zha happy before his death, instead of strictly training him, so yeah Li Jing totally knows what listen to your wife means
7. That being said what's more heartbreaking is that the reason why Lady Yin was the one that threw the oblivion pill away from Ne Zha instead of Li Jing was because he himself couldn't make the choice in choosing his wife or his son and his wife chose for him, which just makes his grief even worse, like when I rewatched the movie I just felt so freaking awful for Li Jing haiz-
8. Ao Guang has ended up being a lonelier figure, with his siblings all betraying him and now having to let his son go with his crush best buddy forever has made his journey as a king more alone than ever, but it's not without logic as he may have figured that with Ne Zha already willing to do so much for Ao Bing, they might as well stick together to ensure Ao Bing's safety, since the Loong/dragon clan being somewhat refugees and hunted down by the heavenly court would bode ill for Ao Bing so yeah
9. I might be delulu but I saw one of the calligraphy ink posters of Lady Yin and someone saw a purple pill floating below her face and at her hair which could foreshadow her fate, but when I watched a second time I saw that bead again at her hair tie when there was a closeup of her face in sending Ne Zha away so if the creative team really hid her foreshadowed fate in her literal hair tie I'm gonna-
10. While Tai Yi is kinda nerfed for continuity reasons (where hundreds of his cultivation years are gone just to protect Ne Zha and Ao Bing's souls), we can't deny that he still has the most integrity out of all the immortals, along with Ne Zha's parents, so yeah hopefully that will be continued for Tai Yi as he's ironically the model of what a cultivator should be like despite his lower levels of power compared to other immortals, as he still has a conscience (and is forced to be a babysitter for both Ne Zha and Ao Bing as usual lol)
11. It's also ironic that while the actual humans and humans-turned-immortals are the truly righteous ones with a conscience and not as discriminatory, it's those immortals who were once spirits who project their prejudices and hatred for their own spirit status on themselves and deepen the divide between spirits/demons and humans and the hypocrisy that comes with it, which really gives a dark reflection on how harmful internalised racism can be
12. One instance I realised was that when Shen Zheng Dao was training his disciples by the waterfall he blamed his students on how their cultivation paths are harder was solely because of their spirit birth, which when internalised sounds harsh as one doesn't really choose their birth and it also hints to the planting of seeds of internalised hatred for their own true nature and thinking that things will change for the better when you're more capable of 'not looking like a spirit/looking human' and cultivation, which really worsens the suppressing of the self in cultivation
13. Shen Gong Bao is a very ambitious character who does misdeeds to get to the top, but at least it's shown that he does work a lot harder than most for his own success, just that he snapped and decided to try and cheat his way through with stealing the Heavenly Pearl then, but at least he doesn't cheat all the way since he didn't really take the heavenly pills to help either, so it's a nuanced take on how as an antagonistic figure Shen Gong Bao doesn't always rely on his trickery
14. With all that what exactly is the purpose of cultivating? And with Li Jing and Lady Yin naively thinking cultivating is all about helping more people and accumulating merits, does that mean with their human nature that so many wished to be born as, does that mean the humans are the ones that are more sheltered from brutal realities spirits have to face in cultivating? When did such a divide start back then?
15. Some people have guessed that it's unfair that He Tong with her powers is only working to serve Wu Liang around instead of doing hunter duties like Lu Tong, and this is either a nudge to gender roles in work, where females no matter how skilled are forced to do more subservient roles, or simply because with He Tong's powers she works better as a defence while Lu Tong's archer skills is much more suitable for attacking
16. Iirc, Ao Run sort of looked like she was holding back when she was fighting Ne Zha and Ao Bing even though she's very swift in her own way, and according to BTS art and sketches of the second movie, the team had thought of how Ao Run favoured Ao Bing as her nephew, so even if she has sided with the villain, she still secretly can't beat to hurt her beloved nephew either even if Ao Bing would regard her as his enemy from now on
17. Ao Run and her other two brothers serve as a dark mirror of what happens when rebellious idealism at youth withers to cruel compliance to reality, and the director has said that Ao Run was once like Ne Zha and Ao Bing, but thousands of years of imprisonment has caused them to side the bad guys they once vowed to fight against out of self preservation, which is understandable, whereas Shen Gong Bao shows us a figure who probably once did that and still tried to fight against the bad guys after having snapped, so it goes to show that with youth and less experience, the young ones will inevitably feel invincible against anything life throws at them, the real question is whether they (Ne Zha and Ao Bing) could still persist on their core ideals and morals
18. Sometimes it's also got to do with one's nature and status as well, since Ne Zha and Ao Bing may be able to do their rebellions against heaven differently with their greater innate power compared to most characters, which pits them in a better position to survive anything the antagonists throw at them, so yeah sometimes when it comes to rebelling against the system, it's not just your morals your own innate abilities are a huge factor in determining whether you prefer to die trying or to prioritise your own self preservation
Some of these ideas are my own thoughts and some of them I heard from other people either on Tumblr or on Rednote but yeah! Super long sorry again-