Ka Tō tiong-soe (嘉道中衰) sī Tiong-kok Chheng-tiâuKa-khèng kap Tō-kong nî-kan kok-le̍k soe-thè ê sū-kiāⁿ. Chheng-tiâu ê kok-le̍k tī keng-le̍k Khong Khiân sēng-sè liáu-āu, í-keng khai-sí lo̍h-kiā.