I am 62 years Retired PAF Officer I want to visit China with my family. Do I need police clearance?

Yes, if it is your first time to China, you need to provide police clearance for China visa application. For the tour package for 10 days, I recommend you with https://www.travelchinaguide.com/tour/default.htm that you can choose your own, and better contact the travelchinaguide as early as possible for a better offer.