Warring States period
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The Warring States period was an era in ancient Chinese history characterized by warfare, bureaucratic and military reform, and political consolidation. Wikipedia
Start date: 476 BC
End date: 221 BC
Baxter–Sagart (2014): *tar-sʷˤək; tar-sə (~əʔ) lˤək-s
Middle Chinese: /t͡ɕiᴇnH kwək̚ d͡ʑɨ dʌiH/