Said by: At the end of the Qing Dynasty, a famous old Chinese medicine practitioner in Xiangxiang, Hunan Province, also opened a Chinese medicine shop. He wrote a pair of Spring Festival couplets: "As long as everyone is not sick, why bother to put the medicine on the shelf?"
Meaning: doctors hope that there will be no more diseases in this world, so they don't need Chinese and western medicine to cure them.