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"Experienced keepers or zoologists rarely mistake the gender of giant pandas today," Huang said. "Even though analysis of sex chromosome can identify the gender of animals, the method is seldom used in rare species."

"Fee collection must be governed by law and further regulated," said Liu Shangxi, head of the Chinese Academy of Fiscal Sciences.

"During National Day Holiday and Spring Festival, our resort was fully booked, because we only have 68 guest rooms-although it is a relatively large hotel in the industry," said Li Chen, founder of Cute Beast Pet Resort, a high-end pet hotel of about 5,000 square meters in Beijing, which was established in 2017.

"Despite the COVID-19 effect, Shandong's economy has showed strong resilience," he said.

"Digitization may bring back ancient works in digital form, which is a more realistic and feasible solution," he said.