Bosth = temple's main hall that places the main major Buddha image, and it's also the building for monks to do important Sangkha's activities, such as daily chanting, ordination ceremonies, incantation ceremonies, etc. So the above rian has its sacred form by its nature. 

The NangKwak rian's front bottom edge has Khom scripts read: Ae-Hi-La-Bha, which means FORTUNE COMES NOW, it's a sacred phrase to draw in Wealth and Fortune.

The stand-alone fortune phrase "Ae-Hi-La-Bha" if becomes a part of drawing in Wealth & Fortune Katha, it will change to " Ae-Hi-La-Bhang".

Example:
a) ....BhaHaChaNaNang AeHiJittang AeHiManusSanang AeHiLaBhang AeHiMetta ChomPooTiepae ManusSanang Itthiyo Puriso Jittang.....

b) ....AeHi JittaNama RachaWa AeHi LaBhang AeHi JittaWinyaNa....  

The reverse side of the rian is a five-looped YantHa " Na Mo Budh Dha Ya" ( five Buddhas), so it means the rian also has comprehensive properties & efficacies, such as Metta, KlaewKlaad, etc. 

LP Chong made & blessed many various types of NangKwak. Most of us know NangKwak very well, she is a god of Wealth & Fortune. Some Teochew Chinese in Thailand call NangKwak as "Cai Nia" ***  

LP Chong has been highly respected as a top great Guru of the country, he was an expert of Buddhistic magics, attained ultra Dhamma, and widely admired as a Guru monk of great Metta; even LP Parn, Wat Bang Nomkho, had admired him as Golden monk. The two--LP Chong and LP Parn are close friends of each other, they have same teachers-- LP Paan of Wat Pikul and LP Soon of Wat BangPlamoh.           

LP Chong finished highest Dhamma of PatiSamphithaYarn, so he could shorten a long distance and reach any destination at a short time. LP Chong made amulets of many types, such as mini statues, Yantra jackets, Phayants, and medals of various types; all have been proved by people and soldiers in WWII for their high efficacies on KlaewKlaad and Metta.

LP Chong passed away at the age of 93 on Makha Boochar day of Feb 17, B.E. 2508, which hinted us his extremely great monkhood status.