It happened on the eve of the Dragon Boat Festival, a national holiday devoted to eating rice dumplings and racing boats propelled by teams of paddlers.

Source: https://rapidcityjournal.com/news/nation-world/evan-gershkovich-detention-titanic-sub-update/article_8b1df229-e3aa-5c54-8844-1266a30ac6e5.html

The Dragon Boat Festival is a brief national holiday in the Chinese mainland, prompting many individuals to spend less time travelling domestically and more time relishing their vacation through various activities.

Source: https://www.prnewswire.com/news-releases/ctrip-reveals-increase-in-outbound-travel-bookings-for-chinese-mainland-dragon-boat-festival-holiday-301862748.html