Bandwidth consumption of nginx forwarding static resources?

when putting static resources in third-party storage, such as Aliyun"s oss, does it need to be forwarded to oss, by nginx? will forwarding take up server bandwidth, or will it directly access oss to request static data?

Dec.25,2021
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-64f5-1bf2667-31dda.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf2667-31dda.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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