The Tower of Whispers Episode 20

Jun Che imprisons Lu Ying Ying, then goes to see his mother again. On the verge of a mental breakdown, he is controlled by his mother using the Soul-Separation Herb. Lu Ying Ying sees through that "Yan Hui" is actually Sang Li, who is pretending under the threat of Jun Che's mother. Sang Li leaves Yan Hui behind, wanting to face Jun Che's mother alone, unaware that Yan Hui has already recognized Sang Li as the mute girl. Yan Hui proposes that he and Sang Li overcome the difficulties together. Sang Li disguises herself as a young palace maid, enters the palace and finds Lu Ying Ying. Lu Ying Ying believes that the top priority is to wake Jun Che up and stop his mother, so she asks Cai Ping to take the Calming Bead and beg Jun Che to meet her. (Source: iQIYI)