I saw this advertisement a lot of times. The new Candy Crush ad. However, all of the letters were boxes and it was Chinese characters that are boxed in, hidden.
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May I know where did you see this advertisement? On TV or on your computer? Did it appear as one of the "Booster Videos"? Was that advertisement for the game "Candy Crush Friends"? Sometimes, when the connection has interruptions, the Ads they show will not be clear or frozen, etc.,
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I set the language to simplified Chinese. Does this game support it? It is most likely happen in Candy Crush Friends ad while the game is in simplified Chinese.