wēi tuǒ mǎ pīn yīn
Wade-Giles system (romanization of Chinese)
威
wēi
power
妥
tuǒ
suitable
玛
mǎ
used in 瑪瑙|玛瑙[ma3 nao3]
拼
pīn
to piece together; to put together
音
yīn
sound