China launches bullet train service to UNESCO heritage site Jiuzhai Valley

①China's Beidou navigation service platform begins trial operations ②Chinese scientists release AI model for lunar exploration ③Online research database on Dunhuang studies launched ④China launches bullet train service to UNESCO heritage site Jiuzhai Valley ⑤Endangered Gobi bear spotted in China for first time ⑥A Thousand Whys: Why do some Chinese people tend to have more meat upon the arrival of autumn?