Why were Daniel Wu and Quiet finally killed at the fork in the road?

They took a photo from a small window in the cabin before they died ~ ~ ~

This shows that there is someone in the cabin ~ ~ The lens is seen from the perspective of the person hiding in the cabin ~ ~

At the beginning of the plot ~ ~ Daniel Wu's killer killed an important prisoner or witness ~ ~ It should have ended here ~ ~ But Daniel Wu became curious about the whole incident ~ ~ He went deep into the case and even helped Aaron Kwok investigate the whole case ~ ~ This violated the principle of the killer ~ ~ It can be inferred from the fact that he helped Daniel Wu take over the peace that he was also killed ~ ~ It should be that the head behind the scenes killed them ~ ~ It should be with Gallen Lo.

Besides ~ ~ didn't Wenjing send someone to kill her when she sent her away ~ ~ Later, she came back to find Wenjing ~ ~ and asked Wenjing to ask for 300,000 yuan from her family ~ ~ Wenjing said at that time ~ ~ Do you think you still have life after you asked for this money ~ ~ Wenjing wanted to kill Wu ~ ~ At that time, because she thought that Wu would hurt her ~ ~ She thought that her family would not spare Wu ~ ~ So the last two people must have been assassinated by their heads ~

PS: I think Aaron Kwok's performance in this play is excellent ~ ~ worthy of the award-winning actor ~ ~