The National University of Singapore and Tsinghua University are both famous schools in Asia. They have their own characteristics and advantages, so it is difficult to directly compare which one is better. The following are their respective characteristics:

National University of Singapore (NUS):

1. Ranked in the QS World University Rankings 1 1(2022).

2. Undergraduate, master's and doctoral courses taught in English, among which business, engineering, computer and social science courses are more prominent.

3. Cooperate with many world-class universities and have extensive international exchange opportunities and academic resources.

4. Be good at online education mode, and provide many free online courses on Coursera and edX platforms.

Tsinghua University:

1. Ranked in QS World University Rankings 16(2022).

2. One of the famous research universities in China has many colleges and departments including natural science, engineering technology and social science.

3. It has a long history and is one of the earliest institutions of higher learning in China.

4. Academic cooperation and exchanges with many world-renowned universities have strong international resources.

To sum up, the National University of Singapore and Tsinghua University are excellent institutions of higher learning, and they have gained a wide reputation in their respective fields. Which school to choose depends on your interests, fields of expertise and wishes.