How can reach exhibition international hotel in Dongguan from Soho Hong Kong?

Well, there is no direct train or ferry service. You may take MTR Island Line from Shueng Wan Station to Wan Chai Station, Exit A1. Walk north to get to Harbour Centre, Harbour Road, Wan Chai. Then, take a direct bus to the hotel. The buses depart at 7:10, 8:10, 9:10, 10:45, 12:10, 14:10, 16:10, 17:10 and 19:10. :)