花纹

这件出土于战国时期的青铜古剑表面布满了菱形花纹，历经千年依然锋利如初。

zhè jiàn chū tǔ yú zhàn guó shí qī de qīng tóng gǔ jiàn biǎo miàn bù mǎn le líng xíng huā wén, lì jīng qiān nián yī rán fēng lì rú chū.

This ancient bronze sword unearthed during the Warring States Period is covered with diamond patterns on its surface and remains as sharp as ever after thousands of years.