Why did the Yao family give Chen Ping-an Sophora japonica leaves?

It's from the old locust tree of Yao's family.

In the original text, Qi Jingchun took Chen Pingan to the old pagoda tree to ask for leaves. The ancestors sprouted yin, but the old ones did not fall, and Yao Ci gave a leaf.

Chen Ping-An, the hero of the online novel "The Sword Comes" written by the prince of the bonfire drama. Born in Julie Cave, one of 36 small caves.