HIT Radio has reached an agreement with Radio Foshan to produce a music programme for the Chinese radio station starting this month. Radio Foshan is a major station in Guangdong province. The 90-minute programme - ''Joy and Fun Night'' - will be aired every night from 10 pm to 11.30 pm. It will be hosted by Hit Radio disc jockeys Lucina Yu and Davis Kwan; the programme will feature the latest Canto-pop as well as Western hits. Hit Radio will be responsible for the production of the entire programme and the recorded tape will be sent to Radio Foshan for daily broadcast.