Phra Chao Phra To is a unique Lanna-style wooden Buddha image enshrined at Wat Phra That Sri Don Kham in Long District, Phrae Province. Its distinctiveness lies in the traditional construction method, where locals carved the entire image from a single piece of sandalwood using only "Mee-Phra" or "Mee-To" (local machetes or cleavers). According to tradition, the carving had to be completed within a single day—starting at sunrise and finishing before sunset. Consequently, it is also known as "Phra Chao Tanjai" (The Instant Success Buddha). Currently, it is registered as a significant national artifact by the Fine Arts Department and is housed in the Phra Chao Phra To Museum within the temple grounds.