Sima

It is composed of two syllables: "Si" and "Ma".

Spelling	si
Closest English pronunciation	/s-/
Hint	The /s/ sound in "sun" but is voiced (vocal cord vibrates). Not /si:/ as in English letter "C".
Chinese Pinyin	sī sí sǐ sì
Common characters in names	斯 四 思 丝 司

Spelling	ma
Closest English pronunciation	/mɑ:/
Hint	"man" + "art".
Chinese Pinyin	mā má mǎ mà
Common characters in names	麻 马