Paul Lien, a young doctor who spent 20 months doing humanitarian relief work in Burkina Faso, shared the life lessons he learned by living in the poor western African country.

• 连加恩是个曾待在布吉纳法索二十个月，从事人道救援工作的年轻医师。他分享他在这个西非穷国生活时，所学到的人生课题。