need real help

hi all I have a blog I got good traffic without advertising only google and FB and other search engines, but in last days I saw huge traffic come from China with no referral or IP address, I am sure it from known boots traffic the problem that I use blogger and it hard to block boots traffic and it hard to filter it too in google analytics the alone solution I have it to build a recaptcha page like in image please someone help with js or jquery code this traffic hurt my blog