Changed the home page of title and description, Baidu snapshot when can be updated?

when will Baidu update such headings and small paragraphs as shown in the picture? My home page has changed title and description, but Baidu search is still the old version. I want to know when it will be updated, or what manual method can be used to update Baidu?


Baidu search engine submission entry: http://zhanzhang.baidu.com/si.

other search engine entries:
Sogou URL submission: http://zhanzhang.sogou.com/in.
360URL submission: http://zhanzhang.so.com/?m=Pa.
360 search engine login entry: http://info.so.360.cn/site_su.
Google URL submission entry: https://www.google.com/webmas.
Sogou website contains submission entry: http://www.sogou.com/feedback.
SOSO search website includes submission entry: http://help.soso.com/help_web.

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-64f5-1e463a9-44b8b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e463a9-44b8b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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