Tencent has shut down online play for all Tencent Nintendo Switch systems in China to commemorate Mourning Day on April 4, 2020.
China declared April 4 as mourning day to remember the victims of the coronavirus outbreak.
When users attempt to connect online on April 4, they will face the following error code:
All Tencent Games websites, including the official Nintendo Switch China website, has been temporarily shut down for Mourning Day: