How to shoot Canon 6d at night?

Canon 6D should use low ISO and slow shutter to shoot pure night scenes, and use tripod and cable release to shoot. If you don't have a tripod, you can choose the "hand-held night scene" mode in the SCN file (scene mode file), and the machine will take four photos in succession at high speed, and then synthesize a clearer night scene photo. If you want to shoot a portrait at night, you'd better use an external flash to fill the light, choose "Night Portrait" mode in SCN, or use a tripod to shoot. Night portrait mode can ensure that the night scene as the background is fully exposed and the portrait is normally exposed. If you shoot directly with a flash, people are often exposed normally, and the night scene as the background is dark.