Is there a long distance coach from Ronggui to Hong Kong International airport

Do you mean Ronggui in Shunde? If yes, you can go to the Royal Prince Hotel nearby Ronggui Coach Station to take the direct coach to HK. The shcedules are at 07:50, 08;50, 10:10, 13:50, 15:10 and 17:50. Duration is about 4 hours and ticket fare is about CNY 200.

Leo thank you so much. Someone told me I would have to get out at Shenzhen boarder and change coaches. Do you know about this?

You wouldn't happen to know the times for returning from HK airport to Ronggui?

Yes, you need to get off the coach when crossing the border, but you don't change buses. You need to remember the license plate number of the bus. Afterwards, get onto the same bus, and continue your trip.

The coaches to Shunde are schedule from 7:00 to 20:00 at an interaval of 30 minutes.