Update readme_cn.md

Yabin Li

2023-09-01 f84e9ffb2c7b2829cf99cf777cf5d278ddb3f8fd

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7