people, they're really gerding for a very long battle. you mentioned those weapons they're using. we saw lines of molotov cocktails that had been prepared, catapults that had been homemade and set up so protesters could mount those molotov cocktails in the catapults and launch them at police. there's a column of smoke rising from across the harbor. that is hong kong polytech knick university on fire right now. richard? >> i had been there before. it was not looking like that. 15 seconds here, beijing, what are they doing in terms of influencing hong kong's government on this? >> reporter: we just heard from xi jinping, the head of -- the president of china. he said in brazil a couple of days ago that this was undermining the one country, two systems rule that has defined hong kong for nearly the past 30