What episode is the sister and brother getting married and shouting evergreen?

Episode 25

1, Tang Xiaoyu (Ceng Li) learned that Song Changqing (Feng Lei) and Cheng Jie (Jassamyn Liu) are getting married. Although he blessed them verbally, he felt very sad. Song Jianguo (Zhu) wanted to hold a wedding for Song Changqing, but Song Changqing refused, because Song Changqing still resented having framed his good friend Liu. Song Changqing and Cheng Jie simply got the license, and they didn't have a wedding or a banquet. On their wedding night, Tang Xiaoyu came to the home of Song Changqing and Cheng Jie and gave Song Changqing a book of poems and songs to express his thoughts. Song Changqing was moved by the poetry collection and decided to go to Tang Xiaoyu to thank him. Tang Xiaoyu saw Song Changqing, but let him let bygones be bygones and stop looking for her. They lived apart from each other.

Brothers Company is a TV series directed by Zhang Guoli and starring Zhao Jun,,,, Li, etc. This drama tells the story of the feud between the two families during the Cultural Revolution and the period of reform and opening up, as well as the love-hate entanglement between their children. With history as the background and human nature as the theme, this drama shows the great changes of China society and the twists and turns of people's destiny.