Photo: Jim Spear (L) and Tang Liang(R)Photo: Curtis Stone(L) and Sun Weikun(R)Photo: Kat (L) and Sid(R)To welcome US President Trump's visit to China, People's Daily app conducted a video interview with three couples from China and the US to see how they get along with each other despite cultural differences. Kat and Sid, who have been in relationship for 2