What religion are the Chinese?

I know that there are some who practice the major religions, but what do the bulk of the Chinese believe? The government is officially atheist, but I doubt this has much impact. What religion is associated with the Chinese New Year and the Chinese zodiac signs? Is this somehow connected to Confucianism or Taoism?

I did a Web search on Taiwan, which I figure is more accessible. The Web article said that nearly half the Taiwanese belong to 13 religions? Nearly half? What the deuce does the majority believe?