The Chinese, Vietnamese and Burmese version of the radar tutorial was not my idea! (It was a Vietnamese who asked me to provide such translation).
Everyone I asked for help with the translation said, “Yes, I will help!” — That's the Asian politeness: you cannot say “I can't!” or even “I'm not interested in!”.
That would be impolite.
But then they very politely let me down with the Asian version.
Therefore I will delete this asian version very soon!