Achu

It is composed of two syllables: "A" and "Chu".

Spelling	a
Closest English pronunciation	/ɑ:/
Hint	As the a in English "art".
Chinese Pinyin	ā á ǎ à
Common characters in names	阿

Spelling	chu
Closest English pronunciation	/tʃu:/
Hint	"check" + "boo".
Chinese Pinyin	chū chú chǔ chù
Common characters in names	出 楚 初 处