Write down the specific date. The invitation letter for business visa needs to indicate the name, passport number, purpose of visit, specific itinerary and expenses of the invitee. Check-in date is also an important content. The date of stay refers to the specific date when the invitee plans to stay in China, including the date of entry and the date of departure. It is very important to clearly indicate the date of stay in the invitation letter, because the visa officer will judge the real intention and itinerary of the invitee to come to China based on this information and decide whether to issue a visa. At the same time, the check-in date is also important information for the invitee to handle other affairs (such as accommodation, transportation, etc.). ) During my stay in China. Therefore, the invitation letter should specify the date of stay as specifically as possible to ensure that the visa application is successfully passed.