Adiu

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

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	diu
Closest English pronunciation	/djəʊ/
Hint	"do" + "yes" + "go". /dɪəʊ/ is also close.
Chinese Pinyin	diū diú diǔ diù
Common characters in names	(Common in language but rare in names) 丢