In the winter of 1982, Bhuchung Sonam left his home in Central Tibet. For five days, he trekked with his father across the Himalayas to the Nepali border. Only around 11 years old then, he knew little about what they were fleeing — China’s decades-long colonization of his homeland — and why. He also didn’t realize that he would never again see his homeland, his mother or his six siblings. After arriving in Nepal, Sonam and his father made a pilgrimage to Buddhist sites in neighboring India, the home of the…