Princess Zhu Huan, which episode of the second part caught the little eunuch Balang?

When they were going to ask the queen about her, Erkang caught a eunuch in the imperial garden. This is the murderous killer Erkang and others met on the way to escape, and the eunuch finally exposed the plots and misdeeds of the Queen who framed Wei Zi and others several times in order to protect himself. Ganlong was very angry when he learned about it! So he ordered the Queen and Sister Rong to be beheaded, but Wei Zi, who was merciful, took out a gold medal to plead for Sister Rong and the Queen in the spirit of "the greatest virtue in life is forgiveness". The Queen Mother and all the people present were deeply moved by Wei Zi's noble sentiments, and everyone begged for mercy for the Queen Mother and Sister Rong.