On Wednesday, Beijing was under a red alert for smog, the highest of four levels, and a yellow alert for fog. Other areas, particularly in northern China were still under red alert as of Wednesday for both fog and smog. The high pollution has been going on for a number of weeks, causing flight delays, and leading to traffic bans, as part of what is called smog season or airpocalypse.
The good news for the Chinese leadership is that their fiscal policies have paid off, producing both the world's second largest economy and the globe's leading creditor nation in less than a generation.