What factors can cause delays in international logistics? How can I check the logistics progress?

Common factors causing delays include: holidays (such as the Christmas season in Europe and America and the Spring Festival in China), bad weather (typhoons, heavy snow), queues at customs clearance, and epidemic control measures, etc. Logistics inquiry methods: After your order is dispatched, you will receive an email or text message containing the logistics tracking number. You can track it in three ways: ① Click on the "Track Logistics" link in the email to directly jump to the official website of the logistics provider; ② Log in to your account and synchronize the progress in "My Orders - View Logistics". ③ Copy the tracking number to the DHL/FedEx official website for manual inquiry (the format of international tracking numbers is usually a combination of 10 letters and numbers).