The first door: the first task is to open the treasure chest, rich, experienced and strange. The second task is to answer questions, all of which are in the game. I believe you can answer them correctly!
The second door: I dug up all the pictures of a task he gave me, a total of nine.
The third door: it is also a task to combine poems into a complete poem, which consists of two sentences (from front to back).
The fourth gate: one task is to kill people in Qinglongmen, Baihumen, Zhuquemen and Xuanwu Gate.
The last one is the mysterious swordsman who is digging the last treasure. If you want to kill him, you can go to the vault to get the treasure chest.
Have a nice day!