1x18 - My Fair Princess

The almost-to-be couple engages in the quarrel of the season that ends up in a session of stone-throwing and chicken-drumstick-tossing. The rest of the gang watches worriedly as the Emperor thinks that Yong Qi and Xiao Yan Zi are the strangest pair of siblings around. Yong Qi also manages to offend everyone around him as he falls victim to an illness that cannot be cured by medicine.