At this time, not just anyone could ride in a train's soft sleeper; those were for department-level leaders, overseas Chinese, and others with status and position who could obtain tickets.
Based on Li Hongjun's rank, getting a regular sleeper berth would have been quite lucky; being able to take a soft sleeper back to the Capital must have been the result of his superiors seeing his serious injuries and granting special approval.
This train had only one soft sleeper car, and even so, it wasn't full. When Shen Yunfang and Li Hongjun boarded, they were the only two people in this compartment.
Fortunately, with two people, there was a lower berth for each. Seeing no one around, Shen Yunfang pulled the compartment door shut, creating a small, enclosed space. She then took out a bottle of warm tap water from that space and attended to Li Hongjun as he drank.