Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Johor Bahru to Wuhan as you normally would.
Related info for your journey
Useful info, stats and facts about Senai to Wuhan flights.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Johor Bahru Sultan Ismail Intl Airport to Wuhan Airport flight would often be abbreviated as a JHB to WUH flight.