In the play, Jincheng is Lan's ex-boyfriend. They had an engagement, but Lan broke up because Jincheng's derailed model was caught by Lan. During this period, Jincheng tried to stop Lan from breaking up, but they were all rejected by the woman. Later, Nalan was threatened by Jincheng because she forgot Guo's business plan for the New Year at her home in Jincheng.
Jincheng always thought that Lan was retaliating against Guo Xinnian because he rejected his peace. In order to prevent the birth of Guo New Year's "magic crystal", he set up many obstacles on Guo New Year's entrepreneurial road and even spent a lot of money on his software. After being rejected by Guo Xinnian, he even retaliated with small means and almost killed Guo Xinnian.
Later, the "magic crystal" of Guo New Year was born smoothly, but Jincheng had no choice but to stop. Finally, a series of projects such as early education center, gym and nursing home were developed, and then they continued to grow in entrepreneurship, and finally they came together with Wendy.