Hi @yoo1900. A few days ago I appeared in your post as a winner. But I do not get upvote from you. Please check my other posts.
https://steemit.com/steemstem/@rifki-fiqi/biology-virus-and-its-role-in-human-life-69095f513bdbf
https://steemit.com/steemstem/@rifki-fiqi/biology-virus-and-its-role-in-human-life-69095f513bdbf
hi @yoo1900. please check my post just one
https://steemit.com/photography/@needlife/photographing-the-natural-beauty-of-indonesia-36e443fa1de22