writing system 书写体系
Sino-Tibetan 汉藏语系
Sinologist/Sinologue 汉学家
Sinomania 中国热
of the same origin 同宗同源
the Chinese ancestors 华夏祖先
single syllable 单音节
Chinese language is “soberly logical” 汉语有“合理的逻辑性”
the four tones of Chinese characters 汉语四声调
level tone 阴平