Today is May 4th Youth Day (五四青年节 wǔ sì qīng nián jiē), not an international but a unique day to China. Nowadays, Youth Day has gradually been regarded as a cultural symbol for young people as the mainstay of a country: to shoulder the responsibility of developing China by solving social problems with passion and creativity. Many young choose to study overseas broadening their horizon. Statistics shows that between 2005 and 2019 alone, the number of Chinese students studying in US alone increased by 100 times. However, when did young Chinese actually embark oversea journey? let us start from a photo…