In the play, Jin Dong plays the male host Rong Shi, and Rong Shi is the president of Chengde Chamber of Commerce and adores Xu Yihang. Rulu plays Xu Yihang, an anti-Japanese hero who is good at archery.
In the finale, after Rong left Shimizu's sight for Zhu Mu, three arrows hit Zhu Mu through the glass. Rong's humiliation and blame for so long have finally been lifted, but the responsibility has not been lifted. Yihang failed to get out of the pain of losing Zhao Hua, and she lost the courage to love again. The national war of resistance is coming.
Therefore, in the TV series "Arrow on the String", Rong finally got rid of the identity of a traitor and continued the war of resistance.