In northern Burma opium, bans have ended a century old tradition of growing poppy. Between 20,000 and 30,000 ex-poppyfarmers left the Kokang region as a result of the ban in 2002.People from the Wa region, where the ban was implemented in 2005, fled to areas where growing opium is still possible. Other ex-poppyfarmers are being relocated to areas near rubber plantations. These are often mono-plantations from Chinese investors