Old chinese uniface cash ?

[aidab]

This china uniface cash type ? presents rare (at least for me) characters, not the common one's ... may be someone can help me. It weights 3.7 gr. and
it's diammeter is24 mm

[Locnar]

Hy

That is one Chinese coin from the Six Dynasties (AD420 - 581) "Liang Wu Zhu "

Greeting Egbert

[rati]

Chang Ping Wu Zhu
cast by emperor Wen Xuan(550-560) in the year 553