In the TV series, what incredible cameos have surprised you?

In my learning process, I learned about many incredible cameos in TV series. Here are some examples I've heard of: In Journey to the West, the actor of Sun Wukong, Tang Sanzang, played a role as a monster. 2. Wang Xifeng, who played Lin Daiyu in Dream of the Red Chamber, played a businessman. 3. Wu Yong, the actor of Song Jiang in Water Margins, played a doctor. In the Romance of the Three Kingdoms, Guan Yu, the actor of Liu Bei, made a cameo as a policeman. 5. Xuanzang, the actor of Tang Sanzang in A Chinese Oath to the West, made a cameo as a Taoist priest. In " The Heaven Sword and Dragon Sabre ", Zhou Zhiruo's actress, Abbess Miejue, made a cameo as a female director. The appearance of these guest characters was indeed a pleasant surprise, demonstrating the cross-border talent and creativity of the actors.