The six hearts sung by 1 and tfboys appear in the second, fourth and seventh sentences of the song respectively. The lyric style is mainly fresh, sunny and pure, which not only expresses the vision for the future, but also expresses gratitude to the four-leaf clover, and the three children's attention and firmness to the ten-year contract.

2. "Heart" was sung by tfboys with the release date of 20 13 10.04, and the lyrics were written by Leng Zixi and Xu Ruofeng.