Chapter 37: The Beginning

Simplified Chinese (Mandarin: China)
开始 Kāishǐ	开始 kāishǐ = 'to begin, beginning'.	The Beginning
Traditional Chinese (Mandarin: Taiwan)
開始 Kāishǐ	開始 kāishǐ = 'to begin, beginning'.	The Beginning
Japanese
始まり Hajimari	始まり hajimari = 'beginning', from the verb 始まる hajimaru 'to begin'.	The Beginning
Korean
딱정벌레의 비밀 Tstakjeongbeolle-ui bimil		The Beetle's Secret
Vietnamese (Chinese characters show etymology)
Bắt đầu	bắt đầu = 'to begin, beginning'.	The Beginning
Mongolian (new)
Эхлэл Ekhlel	эхлэл ekhlel = 'beginning', from эхлэх ekhlekh 'to begin'.	The Beginning

The beginning of the great battle.

In (Mandarin) Chinese and Vietnamese, the verb 'to begin' and the noun 'beginning' are identical, that is, 開始 (Trad.) / 开始 (Simpl.) kāishǐ in Chinese and bắt đầu in Vietnamese.
In Japanese and Mongolian, a separate noun is created from the verb. In Japanese, 始まり hajimari 'beginning' is from the verb 始まる hajimaru 'to begin'. In Mongolian, эхлэл ekhlel 'beginning' is from the verb эхлэх ekhlekh 'to begin'.

(Detailed notes on the chapter can be found at Harry Potter Lexicon)