Linguistics: Texts written by Qiao Yan, pp. 1-19, possible on Teams
Language lessons: 1) Zheng Guoxiong, Chen Guanglei, “Lvyou Hanyu”, Beijing Yuyan Daxue, pp. 1-10, pp.32-61, pp. 72-82, pp. 97-115; 2) Xin Xiaoqi, Boya Hanyu, Beijing Daxue Chubanshe, pp.104-127
Possible copy at the 110 e lode