Wang Shih Ciao nut flush rails one

Wang Shih Ciao has been chipping up quietly, eliminating a couple as well. In a recent bust out, the board showed A♣ 5♥ 10♥ and Ciao led out for 4600 which was returned with an all in raise to 8000 by his sole opponent in the hijack seat. Ciao smooth-called and showed his A♥ 9♥ top pair nut flush draw while his opponent had A♠ J♦ top pair. With the turn of Q♠, Ciao was still behind, but with the river of 5♥, he connected with a heart and claimed the pot while booting his opponent simultaneously.