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"Chinese passengers are showing demand in conditions of travel and related services. They increasingly pay attention to privacy and hope not to be disturbed by others, and such demand is stronger in this special period," Yu said.

"Cities should make data available so academics and researchers can analyze it. You can't manage what you can't measure," he said.

"Coastal cities and central cities are ideally more open, " he added.

"Chronic diseases involve complicated diagnosis and treatment processes, which often require patients to visit hospitals regularly, many of whom live in remote regions," said Yue.

"Compared with many startups, we have respect for traditional brands; and compared with traditional brands, we have respect for startups, especially with their internet-based mentality, which focuses on customers," Niu said.