Is the link sent by Tongcheng Travel reliable for invoicing?

Believable. According to a search on Tongcheng Travel’s official website, Tongcheng Travel is a well-known travel agency whose service quality and invoice issuance quality have been recognized by the government and consumers. The invoice issuance process of Tongcheng Travel has been strictly reviewed, and the content and quality of the invoices also meet the requirements of national regulations, so you can use it with confidence. In addition, Tongcheng Travel also provides professional invoice issuance services to meet the different needs of consumers and ensure the accuracy and credibility of invoices. Tongcheng Travel is the abbreviation of Tongcheng Network Technology Co., Ltd., founded in 2004 and headquartered in Suzhou, China. It is China's leading online leisure travel service provider with more than 12,000 employees and a registered capital of 114.29 million yuan.