Due to the global situation of the COVID-19 pandemic, international students are unable to attend classes in person, and online teaching has become an unavoidable choice. This has brought great inconvenience and difficulties to students. Firstly, due to the time difference, they have to wake up in the middle of the night to study. Additionally, they cannot seek immediate help from teachers face-to-face when encountering academic challenges. The lack of immersive learning in an English language environment is a significant loss for international students. Being stuck in the "American time" while residing in their home countries, without timely clarification for their confusion, some students eventually find themselves on the verge of failing to complete their studies. Consequently, they start seeking online course completion services. (Website link: <a href="https://www.lxws.net/particular.php?id=31">https://www.lxws.net/particular.php?id=31</a>)