The Rocket was not at his flowing best, but breaks of 64, 59 and 51 helped him to an easy win.
O’Sullivan will next face Mark Joyce, a 5-4 winner against Fraser Patrick.
China's number one Ding Junhui enjoyed a 5-0 win over Paul Davison to progress to a meeting with compatriot Zhou Yuelong in the second round.
Ding enjoyed breaks of 51, 51, 52, 55 and 138, the second highest break of the event.
“My form has been good since the first match and I played well again today. My opponent did not give me too much pressure and he wasn’t playing well," said Ding.
World number one Mark Selby crushed Alfie Burden 5-0, while defending champion Judd Trump posted two centuries as he downed Ashley Hugill 5-1.
Read the full article on eurosport.co.uk: O’Sullivan flies into second round in China