Excuse me, who wrote the words at the main entrance of Nanjing University?

Nanjing University and "unity, tension, seriousness and vividness" are all words collected from Mao's copybook, which are somewhat blunt.

Harbin Institute of Technology is a combination of Harbin Railway Bureau and industrial Daqing slogan.

Alexander is hairy, too, but the envelope says that Mao Zedong declined Alexander's nomination and asked for a reply, so it is scrawled, not the traditional Chinese characters used at that time.