Bees are common in Taishan. I don’t know if they are dying out in China but in America bees are slowly dying.

From 1972 to 2006, feral honey bees declined dramatically in the US, and they are now almost absent. The number of colonies kept by beekeepers declined slightly, through urbanization, systematic pesticide use. In 2006 and 2007 the rate of attrition increased, and was described as colony collapse disorder.

Apart from colony collapse disorder, losses outside the US have been attributed to causes including pesticide seed dressings,  From 2013 the European Union restricted some pesticides to stop bee populations from declining further. In 2014 the Intergovernmental Panel on Climate Change report warned that bees faced increased risk of extinction because of global warming.*

*wikipedia