Nie Rongzhen
In 1940, Dr. Kotnis met Guo Qinglan, a nurse at the Bethune Hospital. They first met at the inauguration of Dr. Norman Bethune's tomb and Guo was immediately attracted to the Indian doctor. Kotnis could write and speak Chinese, which amazed her. The couple got married in December 1941. They had a son on 23 August 1942, who was named Yinhua – meaning India (Yin) and China (Hua), at the suggestion of Nie Rongzhen.