Short-Term Investments

12 Months Ended

Dec. 31, 2019

Investments Debt And Equity Securities [Abstract]

SHORT-TERM INVESTMENTS

4. SHORT-TERM INVESTMENTS

As of December 31, 2018 and 2019, the Group’s short-term investments consist of held-to-maturity debt securities and available-for-sale debt securities with maturities of less than one year purchased from commercial banks and other financial institutions.