Lost on Planet China finds Troost dodging deadly drivers in Shanghai; eating Yak in Tibet; deciphering restaurant menus (offering local favorites such as Cattle Penis with Garlic); visiting with Chairman Mao (still dead, very orange); and hiking (with 80,000 other people) up Tai Shan, China's most revered mountain. But in addition to his trademark gonzo adventures, the book also delivers a telling look at a vast and complex country on the brink of transformation.  (CHN496, $16.00)