"Cu" means to kick, and "Ju" is a kind of ball in ancient China, made of leather and filled with hair of the animals or people.

“蹴”意思就是踢，鞠是中国古代皮制的球，球内填充有动物的毛或人的头发。

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The book is filled with telling anecdotes: the Cu Chi Tunnel soldiers who look at an overweight Western woman, unable to fit through the dug-out warrens, calculating the wealth of someone so fat.

CNN: ASIANOW - TIME Asia | Books: Catfish and Mandala