Quick Links
Wo Long: Fallen Dynasty's 13th main mission, Lu Bu, Mightiest Among Men, is a long level with several paths. Thankfully, there are only five Marking Flags to find. The first flag is the most well-hidden one, so you might have only missed this one at the very start of the level.
They are sparingly spread out through the mission, with one at the start and the rest coming after you drain the water in the town. Three Marking Flags are found in the ruined town, with the final flag being easily accessed after the last Battle Flag leading to the boss fight with Lu Bu.
First Marking Flag Location
From the starting point of the mission and the first Battle Flag, follow the path of the level in a straight line. After you pass a building on your left, there will be wreckage of homes and buildings on your right.
In front of you, as the path curves to the right, there will be some breakable planks you can smash through. Break down the wall to find the first Marking Flag hidden away.
Second Marking Flag Location
You won’t find another flag until you claim the fifth Battle Flag of the level, which you unlock after draining the water and killing the crocodile demon guarding the flag.
From the crocodile demon Battle Flag, turn around and go back into the room with the gigantic golden statue. There is a ladder in front of the statue you climb to reach the higher level. Go up the stairs and drop through the hole in the floor on your right to reach the isolated Marking Flag.
Third Marking Flag Location
From the crocodile Battle Flag, continue through the level. Pass by and kill the mermaid demons to enter a large house that has enemies inside. Kill these foes and exit the house through a hole in the wall.
Go to the right, jumping over a short ledge in the process. Make your way to the left, and take a right, to find an entrance to a large building. The Marking Flag is in the top left corner of this ruined home guarded by a few soldiers.
Fourth Marking Flag Location
From the crocodile Battle Flag, go through the same path as if you were going to the above flag, but instead of turning right and jumping over the small ledge, go left when you exit the building through a hole in the wall.
In front of you, there will be a building with an opening. Inside, there is a chest on your right guarded by three wolves. To the left of the chest is a wooden wall you can break with a hit. Go outside and fight the bird demon that attacks. Climb up the ledge to find the Marking Flag.
Fifth Marking Flag Location
At the final Battle Flag inside the main building, before you fight Lu Bu, go to the right, where you can see a broken folding screen. It is positioned in front of a hole in the wall that looks like you cannot get past it.
There are small boxes on either side of the screen that you can break by attacking them. Smash the boxes on the side to get past the screen and back outside. Go to the right, and you will see the Marking Flag ahead.