I missed this announcement earlier, but I saw it on CBS News – China launches ambitious Mars mission: https://www.cbsnews.com/news/china-tianwen-1-orbiter-unmanned-launch-mars/. The article goes into a few details than I included below. The article also has a video clip.
A powerful Long March 5 rocket blasted off Thursday carrying a Chinese orbiter, lander and rover on a seven-month voyage to Mars, the second of three high-stakes missions to the red planet and one that, if successful, will put China on the front lines of interplanetary exploration.
The China Aerospace Science and Technology Corporation later confirmed a successful launch and said the Tianwen-1 spacecraft had been placed on the planned trajectory to Mars.