Hey @dungbt, nice introduction. How did you learn about steemit? Might i give you some tips?

1. Always use 4 tags at least to make your content more seen!
2. Use pictures! At least one so your post has a thumbnail

This will help boost your posts reach + earnings! IF you want to learn more about steemit, do follow my mate @steemitguide! He has tons of content, guides and tutorials!