Machine learning identification verification code

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I would like to ask, how did this ttf come from?
how do you get the v3 v4 v5 reras below?

this is the address

Mar.11,2021

Kaiti-SC-Bold.tff is a font file, in bold and bold Chinese, which may have been copied by the author from the system or downloaded from the Internet.

.keras is the model that the author trained and uploaded.

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-64f5-1e9eed6-477d5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e9eed6-477d5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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