Toxic. Blood-skinned cabbage, also known as red phoenix cabbage, contains pyrrolizidine alkaloids, which are hepatotoxic and can lead to liver damage and even cirrhosis.

Dr. Liu Chang of the Institute of Botany, Chinese Academy of Sciences, has warned people on Weibo not to consume bloodshed, and if you must consume it, you need to stir-fry it over a high flame, and some of the pyrrolizidine will be destroyed under high temperature in the absence of water.

For the record, the above is for reference only.