This door of the forest has a treasure hunt branch line, which opens three boxes to synthesize a key. There is a door between the forest country and Pascal village, and that mission npc is there.

Forest Kingdom Library, jump forward lightly, adjust the direction downward and then slide, jump straight past the second time, go to the right, and one will lift up and jump over.

Isn't it simple? It's been grinding for some time before Bian Xiao, and it's still very simple after mastering the skills. Anyone in Neil's mechanical age can try it!