In the east of the door of mountain of the fountain temple, a stone builds the arched door, submit a written statement to " efficacious source depths " . Draw near by steps more than 60 grade on precipice and lay,of split by one ravine,about 3 meter wide, about 10 meter deep, like by stone hole, thus come the name of " efficacious source hole " . Because " drink water rock " Stone engraving, area this to " drink ink rock " . Efficacious the intersection of source and the intersection of hole and both sides, assemble 200 inscriptions on precipices multistage Song, account for the intersection of drum and mountain rub half that the precipice is inscribed while being extant, walk, grass, subordinate to, the intersection of seal character and all body have, like one natural the intersection of stone engraving and calligraphy treasure-house, praised as " southeast forest of Steles " . Have quarter nearly one hundred Section Song inscribe, yuan carve 12 segments, will carve more than 30 periods tomorrow, over one hundred segments so far of Qing Dynasty, substitute famous the intersection of calligraphist and one that assists Cai with Song particularly among them " Forget to belong to the stone " ,Shi Yuan is long " Drink water rock " And Neo-Confucianism family Zhu Xi, national hero's Li Gang and contemporary Guo Mo-ruo,etc. stone engraving of inscription are the most famous. Drinking the origin of water rock has a beautiful legend. More than 900 years ago according to legend, the fountain supernatural Yan Master of temple founder chanted scriptures here, hated the hole playing ravine water and making noise, give a loud shout and stop the flowing water. From then on, ravine water change its course, gush out from in the east the intersection of pavilion and cliff, Goddess of Mercy of Mid-levels, the original mountain stream just dried up. Question of tin Xu drink water rock poem when the Song: "Heavy hill reply mountain range, lock, imprison while being loose, owe spring sound to take a seat only; If I waited upon the teacher side that year, did not teach and drink water to cross his mountain " . Use against purpose and comment the historical legend is also full of wit and humor.