Thread tying ritual - a traditional custom of the Thai
A thread tying ritual, called hang van or et van, is an age-old practice of the Thai in the northwestern mountainous region of Vietnam and western parts of Nghe An, Ha Tinh and Thanh Hoa provinces, who believe a sick person can get well again after praying the deities of muong troi, the heaven, and having his wandering souls returned to the body through tying a thread around his wrist.