Wang Anshi and Su Shi were writers of the same period. What are some anecdotes about their interactions?

Wang Anshi and Su Shi were writers of the same period. They had certain intersections in their lives and work, and they also had many anecdotes. For example, when Su Shi was walking with Wang Anshi, he saw that the foundation of a house had been moved and one wall tilted eastward. Wang Anshi wrote the last sentence to play on the east slope: "The east slope of this wall is sloping!". Su Dongpo raised his head and laughed, then recited the second couplet to ridicule Wang Anshi: "It's because Anshi was wrong!"