Lin, Qiang
Li, Tongtong
Cao, Chuangui
Cao, Yongchun
Man, Zhengxing
Wang, Haijun
Funding for this research was provided by:
National Natural Science Foundation of China (61562075)
Gansu Provincial First-class Discipline Program of Northwest Minzu University (11080305)
Program for Innovative Research Team of SEAC ([2018] 98)
Key Laboratory of China’s Ethnic Languages and Information Technology of Ministry of Education (KFKT202009)
Key Laboratory of China’s Ethnic Languages and Information Technology of Ministry of Education (KFKT202010)
Article History
Received: 30 October 2020
Accepted: 28 January 2021
First Online: 19 February 2021
Competing interests
: The authors declare no competing interests.