Hi, we will arrive Shenzhen late evening of Sept. 09 and intend to take a train from Shenzhen to Fuzhou the next day. I found that train service K636 leaves for Shenzhen at 21.26 and arrive Fuzhou at 15.15 the next day. Can you tell me if there is a earlier train? There are three of us and we would like to book up one cabin of soft sleeper with two upper and two lower. Is this possible? Can you advise me how I can make advance booking for this train?