These photos remind me my time in Tsinghua. The slogan on the auditorium indicates that these photos must be made many years ago.
I love the straight road between the second gate and the west gate with ginkgo trees along both sides.
There is a lotus pool beside the road, which is famous because of the article “The Moonlight in the Lotus Pond”. This article was in our text book of middle school in my age, I am not sure if this is still the case now.

The auditorium
The east gate/ west gate

Wen-shao Wang, academician of CAS, started his research on electro-osmosis in 1957, even earlier than Esrig’s study in 1968.