Lha Chi Dril Drup, the practice of the four deities, is a Shangpa Kagyu practice.
The Shangpa Kagyu lineage has been started by Kyungpo Neldjor (11th century). He received instructions from two dakinis: Niguma (Naropa’s sister) and Sukhasiddhi. This practice is an especially efficient mean to realise enlightenment.
To practice Lha Chi Dril Drup, it is necessary to have received its empowerment.