Simplify the following text for a Grade 6 native English-speaking person.
Original: When conditions deteriorated in Kham , Khyentse Rinpoche and his young disciple left for Central Tibet and Lhasa , where in 1955 , for the first time , they met Tenzin Gyatso , the 14th Dalai Lama .
Simplified: When things got bad in Kham , Khyentse Rinpoche and his young student went to Central Tibet and Lhasa . In 1955 , they met Tenzin Gyatso , His Holiness the 14th Dalai Lama .