中国的高考（本科考试）是非常科学严密的，北大清华的本科录取几乎看分数（有少量保送生）；而研究生考试录取就轻松多了，搞定导师，就成功了一半。

所以，清华北大本科的含金量最高，研究生含金量低一些，是有一定道理的。

China's college entrance examination (Undergraduate examination) is very scientific and rigorous. The undergraduate admission of Peking University and Tsinghua University almost depends on the score (there are a small number of escorted students); The admission of graduate students is much easier. If you get the tutor, you will be half successful.

Therefore, it is reasonable that the gold content of Tsinghua University and Peking University is the highest and that of postgraduates is lower.