Why does Fan Li know that Gou Jian can be in trouble, but he can't be rich?

When I chose to help him before, I didn't necessarily know that Gou Jian "can have difficulties, but can't have money."

You must have been in contact with Gou Jian for a long time before you discovered his nature.

So I think it must be for my own ideals. After the ideal is completed, I feel that nothing is safe and nothing is important.

So I went into business and became Tao Zhugong. . .