You are confusing the Republic of China, commonly called Taiwan (which is the subject of your first link) with the People's Republic of China, which sent this robot to the moon.
Both of them have nuclear power though (but only PRC has nuclear weapons) and radioactive material in sufficient quantities.
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Looks like it: http://en.wikipedia.org/wiki/Timeline_of_the_Republic_of_Chi...
They had capability to produce required material decades ago.
They also have sufficient nuclear arsenal to warrant maintaining stockpiles of the stuff: http://en.wikipedia.org/wiki/China_and_weapons_of_mass_destr...
You are confusing the Republic of China, commonly called Taiwan (which is the subject of your first link) with the People's Republic of China, which sent this robot to the moon.
Both of them have nuclear power though (but only PRC has nuclear weapons) and radioactive material in sufficient quantities.