In the story, two friends, Li and Chen, embody the Taoist philosophy of friendship. When a traveler asks about their strong bond, Li explains that true friendship flows naturally, like a river, without force or expectation. Chen adds that it involves "wu wei," or non-action, meaning acting in harmony with the natural flow of things. The traveler learns that genuine friendship is about mutual respect, allowing the relationship to develop organically, and embracing the Taoist principles of harmony and non-interference. The story highlights that true friendship is nurtured by respecting each other and letting the relationship evolve naturally.