Hi Yujun,
Thank you for reaching out to let us know about this fraudulent website. We have reported this internally and steps are being taken to have the website removed.
We do not engage in such giveaways or airdrops. We will continue to share such notifications to warn the community. Please only ever follow the official Algorand Foundation or Algorand websites and social channels for official updates.
Regards,
Ronan
Algorand Foundation