I suspect that, after CHN's debacle at the last Sudirman Cup where both their WD and XD lost their matches, their doubles team come to Glasgow WC2017 with a mission to make amends or redeem themselves. thus unwittingly stressing themselves out. Luckily, CHN MD are doing alright, barely scraping through the two QFs for an all-CHN semifinal to be assured of a finalist in MD. In WD and XD, they are down to only pair each to hold the fort at the semifinals. CHN WS , their weakest link, would've been pathetic if not for the amazing run and giant-killing feat of the young accidental hero, Chen Yufei, whose exploits in taking out two highly fancied formidable opponents, namely, Akane Yamaguchi and Intanon Ratchanok, for a place in the semifinals and assured of at least a bronze medal, is already far exceeding expectations. I'd consider it as mission accomplished for her regardless whether she can survive the semis or enter the final, let alone take the women's singles crown.