A rickshaw puller waits for customer outside Senso-ji Temple in Tokyo, Japan, April 20, 2011. The plunge in the number of foreign tourists to Japan following a string of natural calamities and a nuclear crisis has put the key industry in a tough situation, particularly with crucial Asian markets, its tourism agency head said on Wednesday. The number of foreign visitors fell by half in March compared with that of last year. (Xinhua/Ji Chunpeng)