What weather effects are included with Dota2 Monkey King’s new travel map?

It rained heavily. The new travel map in version 7.00 is of great significance. It not only contains the Monkey King, the first truly new hero in DOTA2, but also has weather effects including heavy rain. "Dota 2" is also called "DOTA2". It is a game developed by IceFrog, the core map producer of "DOTA", and the American company Valve. It started testing on April 28, 2013.