The last sentence before the missing link is "You dash for the streets outside ."
I can see some hidden text in the page source "空白" but it looks like a conditional expression is hiding it and there's no alternative. Not sure if there's a way I can tweak it so I don't lose my progress.
IIRC I sided with the Wen, I think I collected evidence, and I snuck in. Sorry that my memory isn't the best. I'm in the middle of a parallel playthrough and will see if I can reproduce it. :)
Side-question: Is the game intended to be played in one sitting, or are you supposed to be able to close it and continue it later?
I was able to repro with a substantially different path. One correction: I chose Wu on both playthroughs, but it looks my path/options changed due decisions that predate that. This time I had the softcore option, but did not have the option to sneak in or take evidence. I still ended up on the same dead end.
I also found a minor conversation loop that I didn't notice before in my first conversation with Fang.
I'm really astonished by the narrative complexity and think this is really special, so I hope highlighting flaws isn't too much of a downer.