I-pin

In the early 1960s, following the collapse of Mao's Great Leap Forward, Liu and Chang, as party officials in the city of I-pin (120 miles south of Szechwan's capital, Chengtu), vigorously prosecuted those cadres under their jurisdiction who had shown less than wholehearted devotion to that campaign.

1971, Thomas Jay Matthews, “The Cultural Revolution in Szechwan”, in The Cultural Revolution in the Provinces, Harvard University Press, →ISBN, →LCCN, →OCLC, →OL, page 96

After crossing Yunnan province, the Long River reaches the sizeable city of I-pin, in southwest Szechwan province. Just above I-pin is the true head of navigation, beyond which no commercial craft can make their way.

1988, Lyman P. Van Slyke, Yangtze: Nature History and the River, Addison-Wesley Publishing Company, →ISBN, →LCCN, →OCLC, page 18