HONG KONG — Los Angeles-based sales and finance company LongTale Intl. has picked up worldwide sales rights to Chinese-American helmer Sherwood Hu’s “Prince of the Himalayas.”Starring Purba Rgyal, winner of China’s 2006 “My Hero” TV song contest, the “Hamlet”-adaptation is a young prince’s search for identity and revenge. It was produced by Hus Ent. and Shanghai Film Studios. Pic, which screened at last year’s AFI Fest, will next show as the opener of the Monaco Charity Film Festival on May 14 and will be screened for buyers in the Cannes Market the same month.