I-pin

A plant being built in I-pin will produce 6,000 tons of 666 powder annually.

Source: wiktionary

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.

Source: wiktionary

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.

Source: wiktionary