The so-called "old saying" says that people can't help themselves in rivers and lakes, which turned out to be "Gu Long's words", and the spread of martial arts novels and its various forms made this sentence widely circulated. This signature is inlaid with the calligraphy works of writer Gu Long. It drifts with the environment (including social environment, human environment, relationship, nature, etc.). ), forced to adapt, but also helpless to change themselves. There are no boundaries in human nature, and luxury and frugality depend on the situation: there are no boundaries and restrictions in human nature and desire, and luxury and frugality depend on the environment and situation.