How to support Chinese in shell script under Mac?

has written a shell script
there are some read commands to read user input
there are some echo display output
but once run, Chinese that does not support Chinese
input will be ignored
what should I do? Thank you. Thank you

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Jan.12,2022

I made a mistake. You can support Chinese to ignore me

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e89602-f53.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e89602-f53.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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