well, since the Communist takeover of China, they have even banned/persecuted THEIR OWN PEOPLE'S religions, so it is not totally surprising an event based on the timing of a Christian holiday might be excluded.
i see it as another attempt to drive away westerners from the game. after all, breaking a tradition that has existed hand in hand with THE GAME ITSELF follows suit with the advent of Communism in China and the changes that wrought!
on a more important note, China has made many overtures to Putin's 'organization' recently, who just happens to have mentioned nuclear war in his recent address to Russia/the world regarding USA involvement in Syria and possible involvement in Ukraine, which Russia desperately needs for its OIL RESERVES! and notice President Trump has already acquiesed to removing USA troops from Syria.
ALL OF THIS IS HAPPENING RIGHT NOW!