I moved to mainland China in 1979, when the country's per capita income was less than one-third of Sub-Saharan Africa's. Today, China has become an upper-middle-income country, and it is on track to become a high-income country by 2020.
后来我再一次经历了这一转变。1979年我来到中国大陆，当时，中国大陆人均收入只有撒哈拉以南非洲的不到三分之一。如今，中国已成为中高收入国家，并且极有可能在2020年步入高收入行列。