When I booked my own trip to China last year, I found it much easier to use site. They actually have a page dedicated to China flights:
https://flyer-club.com/p/country/china/ . The platform helps compare prices across multiple airlines in one place, which saves a ton of time. You can also filter routes based on preferences, like avoiding long stopovers or choosing direct flights if available. What’s especially useful is that it shows the most cost-effective days to travel, so you can adjust your itinerary and save money without compromising too much on convenience.