The defeat was hard to take. The manner of it, however, offered PV Sindhu and her team something to take away.Wang Zhi Yi had just ended Sindhu's bid for a sixth BWF World Championships medal on Thursday, beating her 21-11, 15-21, 21-17 in an 88-minute pre-quarterfinal at the Indira Gandhi Indoor Stadium. The Chinese third seed, five years younger than Sindhu, had survived a demanding three-game battle and cramps to keep her title hopes alive.advertisementRead Full StorySindhu was disappointed when she walked into the mixed zone afterwards. But she was not physically spent. There was enough left in the tank…