Hi @qi_tang
Welcome to the community forums and Happy to see you on Magento Forum
This community forums is a very good platform to ask the questions and try to help others.
You can also start diving into the http://devdocs.magento.com/
You can get an idea about the already reported/existing issue from Github: https://github.com/magento/magento2/issues
Also, you should read this post: https://community.magento.com/t5/Welcome-to-the-Magento-Community/Start-here-and-hello-from-me/m-p/5... (in particular the guidelines)
If you're new to our forums, welcome! Take a look around, introduce yourself, check out our guidelines, and be sure to reach out to me or any of our awesome moderators if you have any questions.
You can ask also question to Magento Community Manager @sherrie if you have still issue.
You can always share your thoughts on this platform and yes definitely you can get help from existing community members as well
Looking forward to your contribution on this forum.
if issue solved,Click Kudos & Accept as Solution
