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Disallow: /

User-agent: NaverBot
User-agent: Yeti
Disallow: /

User-agent: Baiduspider
User-agent: Baiduspider-video
User-agent: Baiduspider-image
Disallow: /

User-agent: sogou spider
Disallow: /

User-agent: YoudaoBot
Disallow: /

user-agent: AhrefsBot
disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: *
Disallow: /images/
Disallow: /system/