This is a Notable Operational milestone.
The aircraft is a Chinese built version of the Eurocopter (now Airbus Helicopters) EC175/H175 using the WZ16 engine/Safran Ardiden 3C jointly develped by Safran Helicopter Engines and the Aero Engine Corporation of CHina (AECC)
Note: Another source indicated that 1st flight took place a day later
Source: Industry Briefs|China's AC352 Finally Flies, VERTIFLITE March/April 2017, Page 6