The rich grow old like everybody else. China’s wealthiest are, on average, 55.7 years old, up from 54.7 a year ago. Still, newcomers made sure the club of China’s wealthiest has more young blood than it did in 2017. This year, 15 of China’s 400 Richest are under 40, compared to 13 last year. Among them, two inherited their fortunes; the rest are self-made — incidentally, all in tech. Together the 15 are worth close to $63 billion……..