Air sports fever in Hainan highlights mutual promotion of sports, tourism

①Self-driving test made on Beijing-Xiong'an expressway ②Air sports fever in Hainan highlights mutual promotion of sports, tourism ③Chinese university develops six-legged guide robot for blind people ④China to start construction of marine archaeology museum this year ⑤3,000-year-old rock painting cluster discovered in Qinghai ⑥A Thousand Whys: Why is scented sachet lifesaving in ancient China?