For most international students, studying abroad means just packing a suitcase. But when Iranian twin brothers Majid and Mahshid came to China in 2008, they first had to convince their wives and bring along babies less than a year old. Over their 17 years in China, they've built a cultural bridge between China and Iran through trade and music. Now in their fifties, their ambition remains undimmed as they plan to expand their business into Arab countries and Europe.