Dear @alzhao,
I'm delighted to read polite and friendly communications that entertain and bring laughter and happiness throughout this forum.
In fact, I’m something of an observer from outer space! 
Jokes aside, as I’ve read through your forum’s documentation and informative product announcements, as I mentioned in another post to @bruce , you all rock! 
To be honest, after reading a lot of information within multiple forums regarding Opal's performance issues, I find @hecatae realistic use case to be very good. I'm still curious to know @Ricesteam first set up results.
Happy Thursday 