are making noise for their political purpose. "Trump may be ignorant of the protocol", "Trump maybe seek luxury hotels business in Taiwan"... These are typical campaign attacking words.
BTW, all the left media I saw so far are intentionally misleading by inaccurately translating China's Foreign Minister's response.
NPR:
China's Foreign Minister: Trump-Taiwan Call 'A Small Trick'
Usatoday
China: Trump-Taiwan president call was 'small trick'
The Guardian
China dismisses Trump call with Taiwan as 'small trick'
But what China's FM actually said is, Tsai Ing-wen (Taiwan president)'s phone talk, a small trick by Taiwan side, won't change existing global view towards one-China policy.
The MSM intentionally left out "by Taiwan side", so that they can mislead the readers and listeners to think in China's eyes, the "small trick" was played by Trump.
There is no doubt that China know there will be some changes with Trump presidency coming and will test Trump by real action, just like they did on W 15 years ago when they caused the incident that led one Chinese pilot died and U.S plane being forced to land in China due to collision. China will test every tough leader from u.s. by actual actions, not by words war.