Peng Yi tradition is the tradition of Loy Kratong the Lanna style with a two-part translation of Yee Peng mean full moon or full moon night. That means two full days in the tradition of Lanna.
ประเพณียี่เป็ง is loy Lanna style by "Yi means two parts, Peng means full moon or the full moon. Which means the tradition in the second lunar month of Lanna.