<Chinese TV Series NOW> ”Lotus Flower Mansion” EP4, Li Lianhua and Fang Duobing struggle to solve the case = Synopsis / Spoilers

*Contains synopsis and spoilers. Episode 4 of the Chinese TV series "Lotus Flower Tower" depicts Li Lianhua and Fang Duobing's struggle to solve the case.
The lord of the castle, Gyokukosho, kills all the guards of her murdered sister, Gyokushuso, and then tries to torture Li Lianhua.
Tahei explains to Gyoku Hongxiang that he will investigate the case as a detective from Hyakusenin and promises to find the culprit within three days. Li Lianhua and Fang Duobing begin investigating the crime scene.
Fang Duobing immediately felt that Yu Hongzhong, who had killed all the guards, was the most suspicious.
While they were talking to each other to get a clue, they witnessed someone entering Yun Jiao's room. Fang Duobing, who had made preparations in advance, succeeded in capturing the culprit wrapped in a cloth.
Thinking it was a candle, they removed the cloth and found the lord of Tamaki Castle. As they got closer to the shocking truth, they uncovered the lord's true identity and evil deeds. The truth behind Tamaki Shusou's sad death was revealed and the incident was resolved.
That was the end of it.