 Koxinga 's grandson Zheng Keshuang was rewarded by the Qing Emperor with the title " Duke of Haicheng " ( 海澄公 ) and he and his soldiers were inducted into the Eight Banners . The Qing used Koxinga 's former rattan shield troops ( Tengpaiying ) 藤牌营 who were placed in the Eight Banners against Russian Cossacks at Albazin . 
