The Eighteen Luohans are the original followers of the Buddha who have reached the state of Nirvana and are free of worldly cravings. 
The boldness of Guanxiu's luohan drawings is artistically exemplary in my view so I put them here on my web page.
Even after its long way through many steps of reproduction the original artwork speaks to us as unbelievable expressive, vivid and freely developed portraits.
The steps of reproduction from original to this article are:
- Chinese picture scrolls of 16 portraits painted by Guanxiu, ca. 880
during the Tang dynasty (618-907), today lost (lost not before 1764)
- Construction of a temple (Luohan Hall) for enshrinement of copies of the portraits engraved in 16 blocks of stone, 1764
Today these blocks are part of a pedestal in the museum of the province Zhejiang in Hangdschou
- Stone rubbings made from the engraved portraits on paper,
50cm x 120cm, probably by the Zhejiang museum, probably after 1950
- Photo reproduction (analog/ photochemical) of the stone rubbings in preparation for the letterpress print
- Print and publication in 16 small-format letterpress prints 
- Digital scans from the letterpress prints
- Conversion of some of the scans into web-ready images for this web page (incl. some large scale images).
Details from various of the 16 luohan prints
 Selected web links on Eighteen Luohans:
- Eighteen Arhats
- Eighteen Luohans in Niche No. 68 at Feilaifeng
- China show at the Milwaukee Art Museum
 Publication from the mid-20th century, quite well-known in Europe
(sorry I don't share particulars).