打树皮，在东北的深山老林里是一种神秘的文化符号，也是在这种特定的自然环境中产生的秘密语言。常年在林子里“作业”（狩猎、采参、采集）的人必须熟悉和懂得这些“语言”，否则不但没有或很少有收获，甚至还可能酿成大祸。所谓打树皮，就是用刀将树皮割开一个口子，但树皮 Barking in the mountains and forests in the northeast is a mysterious cultural symbol and a secret language in this particular natural environment. People who do “work” (hunt, take part in gathers, gather) all year round in the woods must be familiar with and understand these “languages”, otherwise not only will there be little or no gain, they may even be catastrophic. The so-called playing bark, is to cut a bark with a knife, but the bark