When, on long lines of stations, towers or other structures are used, it may be necessary, for greater speed, to sometimes employ semaphores for aerial telegraphy. … Semaphores consist of a post with arms. The arms starting with about three feet in length, to be increased one foot for every mile. These arms are made movable by ropes passing over wheels or pulleys, and moved by a crank below.

This posing is the film's comic highpoint.

Red and blue are different colors, but two shades of scarlet are different tints.

Just as the Miao and the Yao had been pressed into Indo-China, the Yi were pushed out of the more eastern provinces of China by the slow advance of the Chinese. In Yunnan the Yi have moved generally toward the south. Up to the time of Mongol conquest in western Yunnan, the Yi had concentrated their population in Tali and Yungchang (now Pao-shan), (4) but today there are very few Yi living in these two districts. The most concentrated Yi population is to be fond in southernmost parts of Yunnan, the region inhabited by the Pai Yi.