The mkt
parameter in the Bing Visual Search API is used to specify the market where the results come from, which is typically the market where the user is making the request from. According to the documentation, the mkt
parameter should be set to the appropriate market code, such as en-US
or zh-CN
. However, it seems that the mkt
parameter is not taking effect for your searches and the returned links are blocked by mainland China.
It is possible that the issue is related to the Bing Visual Search API being blocked in mainland China. According to the documentation, the Bing Web Search API does support the mkt
parameter and you mentioned that it worked for your searches. It is recommended that you use the Bing Web Search API instead of the Bing Visual Search API for your searches in mainland China.
I hope this helps!
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