Recently, the DDGP chemotherapy program independently researched and founded by the team of Prof. Zhang Zhizhi of the Oncology Department of the First Affiliated Hospital of ZZU was enrolled by the 2020 National Comprehensive Cancer Network （NCCN） guidelines and hence became the first-line treatment for NK/T cell lymphoma recommended by the NCCN guidelines Chemotherapy. The NCCN guideline is the most authoritative international cancer diagnosis and treatment guideline. The DDGP plan is the first tumor treatment plan ever written into the NCCN guideline in Henan Province.