I agree, it's amazing. Soggy Shen Wei is a very good Shen Wei!

Re: Da Qing's flashback - You know what I always hoped the show would have done more? Identity porn shenanigans with Ye Zun & Shen Wei. Imagine if Da Qing recovers a partial memory, and thinks Ye Zun is Shen Wei. I really thought they were initially going to go in that direction with that plot thread!
Same! If Shen Wei isn't going to tell anyone about his evil twin, then his evil twin should make his life more complicated. There was even that speech earlier on about Dixingians losing the war – it'd fit well if Da Qing thought that Shen Wei had been evil before having a heel face turn at the end of the war and purchasing some hair dye.

Re: Li Qian sending an anonymous e-mail - I had assumed it was to protect her own identity, in case anyone would pull up/snoop in her personal e-mail accounts.
That does make sense.