Kim Ji-soo wrapped up a visit to the coastal city of Qingdao in northern China just last weekend, but she is already contemplating where she will go on her next visit.“It seemed affordable, nearby and I wanted to visit a new city,” said the 57-year-old Seoul resident, who had been to Beijing before.“I enjoyed the food and the vast space the most,” Kim said, adding that the city’s bustling energy – which she attributed in part to the number of newborns and young children with their parents –...