Fix: Return tuple ('', []) when char_list is empty to prevent ValueError (#...

lingji-yidong

2024-06-28 c880db53646ab9fd26417f4baf004ab44cc24e1a

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一    1
幺    1
二    2
两    2
三    3
四    4
五    5
六    6
七    7
八    8
九    9