What is the best way from shenzhen Louhu to zhongshan? Is there a train? How long to reach there?

There is no direct train service between these two places. Thus you are advised to take a direct coach to Zhongshan from Luohu Bus Passenger Transport Station.
The buses are available from 7:00 to 21:00. The trip takes about 2 hours. The ticket fare is CNY 80 per person.