Mayer overcame the Chinese wild card 6-3 6-3 to set up a second-round meeting with either 13th seed Gilles Simon or Benoit Paire.
Also on Sunday, Pablo Andujar advanced when Mikhail Youzhny retired in the first set of their first-round tussle. The Spaniard was leading 5-2 when the Russian called it a day.
Lukas Rosol and Carlos Berlocq also progressed, but did not have it all their own way in their respective encounters.
Czech Rosol ousted Frenchman Julien Benneteau, while Argentina's Berlocq was a 4-6 6-4 6-4 winner against Russian Dmitry Tursunov.