i was just sent down a translation rabbit hole because of a character that as on LN16 has appeared 0 times! he has been MENTIONED TWICE and with different names, and i only found this out because someone mentioned him and i fully did not recall who he was.
in LN8 Ch4 we have Grand Marshal Lo, he is the highest ranking civil officer/bureaucratic official regarding the Military, and it is implied that he is equally high in the military command as Lakan, just in the bureaucracy instead of the military. He is a tricky person for Jinshi to deal with because Jinshi spent so much time in the rear palace that he otherwise might have found common ground with Lo, and also because Lo is like the one good person involved with Anshi.
he was appointed as a frequent bodyguard of Anshi whenever she was out of the rear palace (i think this is referring to when she was in the inner palace as the mother of the crown prince, and then the Empress) and he was favoured by the Regnant. Lo has the ear of Anshi and the Emperor, and if we believe the rumours about Lakan removing basically everyone who was above him as he climbed the military ranks Lakan also seems to respect Lo but that is much more speculative.
in LN14 Ch 13 we have Lu who was promoted from Grand Marshal to the position of Grand General at the same time Gyokuyou was named Empress, which would have been before LN8 by close to a year. This was confusing me in the English because it is a denser paragraph of names and political alliances and the Lo/Lu thing, and so i went and looked at the Japanese for a clearer picture.
NOTE - i can kind of fumble my way through kana atm, i can not read Japanese and i used google translate and Jisho to parse this information together.
first thing the name change is just English, in both 8 and 14 General Lu has the name 魯 which could be translated as Lu or Ro (which in an official English release would become Lo, like Rakan to Lakan) which almost makes me think this was a bad record keeping mistake on the part of the English translation, this character is maybe a third of one chapter in Vol 8, that is not some one of note.
in terms of the name, we also have Yao's uncle Lu, and i went to see if they share a name, and they do! but, the Japanese gives what i think is his full name when he is brought up, Lu Shijilang, this is from google translate though so that could be wrong but it is
姚の父親は他界している。保護者たる叔父は、魯ルー侍じ郎ろうだ。猫猫たちは西都から帰って来たが、魯侍郎は西都居残り組である。
Yao's father has passed away. Her guardian uncle is Lu Shilang. Maomao and the others have returned from the Western Capital, but Lu Shilang is staying behind.
魯ルー侍じ郎ろう is what seems to appear when Yao's uncle is brought up, again i am using machine and could very well be wrong
for the i am going to refer to them as Minister Lu (Yao's uncle is the Vice Minister of Rites) and General Lu.
General Lu as he is mentioned in LN14 Ch13 seems to have been promoted from a position that i have been able to best reason as the Minister of War, he is called the Grand Marshal, but i have no clue what that means. It seems that he deals or dealt with the bureaucratic side of war, in a position equalish to Lakan, in the sense they both had a rank equal to each other as the two highest ranking members of the military, as explained in LN8 Ch4, not specifying who, if either, outrank the other. However the promotion General Lu receives means he is now in a position higher than Lakan, and seems that the Grand General is a Commander-in-Cheif, which i am able to best reason as he directly advising the Emperor on matters of War, rather than before as Grand Marshal which would have been advising and justifying to court.
This promotion was given because he is kind of the only person in the Empress Dowagers faction that Anshi likes, and was kind to her, and thus Yang also thinks highly of him, and he was the best option to promote to ease the court tensions around Gyokuyou becoming Empress.
All of this is to say this is a cool and interesting character we know quite a lot about considering he has been mentioned twice. i would not be surprised if he is given the position of PM at some point soon, i think him or the head of the southern founding clan (remembering that the last PM was Shishou, we at least don't know if anyone has been appointed yet i don't think) are the most likely options.
Shame what happened to his name...