Paul Wandel, ambassador until 1961, also the first Minister of Education and Youth of the German Democratic Republic. You can actually still get (out of print) his books translated into Chinese.

Here's the German Wikipedia page about him which even through Google Translate should answer most questions you might have about him. If you have other questions, let me know and I'll be happy to pull from Mandarin sources.

Can't tell you who he was, but the Romanization of that name is Wang Dai Er, if that helps.