The History of Reiki
Reiki was developed in the heart of mainland China by a peasant farmer named Woo Chung in 1836. Within just 4 years, Chung's Amazing Reiki System was being practiced by thousands of people. By 1845, Reiki had become known and practiced by nearly 30% of all Chinese and Chung's Amazing Reiki booths collected thousands of curious onlookers in all of China's circuses and bazaars...
see:
http://ratfactor.com/reiki-origins-and-warning