On June 10, 2021, the Data Security Law of the People's Republic of China (the "Data Security Law") was adopted at the 29th meeting of the Standing Committee of the 13th National People's Congress. The law will officially enter into force on September 1, 2021. The Data Security Law is a fundamental law in the area of data security and is also a key component of the entire national security legal system. In this article, we provide a preliminary analysis of the changes and key issues in the final draft of the Data Security Law, and then further analyze the relationship between the Data Security Law and other related regulations as well as challenges for corporate compliance.