Watching Chinese money flow into his home city of Sihanoukville, Cambodian Um Keangseng opened a language school to meet the growing demand for Mandarin lessons. "There are Chinese businesses everywhere," says the 39-year-old, who founded his school a decade ago to address the market for skilled communicators. Among his 400 part-time students is 18-year-old Ouk Sok Heng, who has never set foot in China but has ambitions to continue his IT studies at a Chinese university. "In the future, I want do business with Chinese people. It will be easy (to earn money) if I can speak Chinese," he says. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES