Melody of Golden Age Episode 23

Mo Qian Zhi was anxious to solve the case, so he led everyone straight to the scene to see the body. When Yan Xing inspected it, she found that the corpse's head had been chopped off. Now, there is a suspect, the deceased's biological brother. The two had a quarrel before his death, so the suspicion is quite high. Yan Xing thought about it, looking at the wound: either the murderer had great martial arts skills, or he hated the deceased so much that he gritted his teeth. Now, it seems more like the work of a master. (Source: Chinese = tvrili.com || Translation = unbeliebubble at MyDramaList)