Try to describe the source of ginseng and the main points of character identification of sun-dried ginseng and wild ginseng.

A: (1) Wild products are commonly known as "wild ginseng" and cultivated products are commonly known as "garden ginseng", which can be processed into commodities with different specifications, mainly including sun-dried ginseng, red ginseng and white ginseng. (2) Sun-drying ginseng: ① The taproot is cylindrical or spindle-shaped; (2) The surface is grayish yellow, with shallow intermittent horizontal lines and obvious longitudinal wrinkles on the upper part or all; ③ The lower part has 2-3 branches; ④ The apical rhizome (reed head) has adventitious roots (Polygonum) and sparse pit-like stem marks (reed bowl); ⑤ Hard, yellow-white in cross section, powdery, brown in cambium, with yellowish-brown punctate resin channels and radial cracks on the epidermis; ⑥ The gas is slightly fragrant and specific, and the taste is slightly bitter and sweet. (3) Sun-drying ginseng: ① The main root is thick and short, with more than two branched roots, which are splayed (splayed legs); (2) The surface is grayish yellow, and there are thin and deep horizontal ring lines (iron lines) at the upper end; ③ The fibrous roots are sparse and slender with obvious verrucous processes (pearl points); ④ The rhizome is slender, often equal to or longer than the main root, with dense stem marks on it. The adventitious root is attached with two tips (jujube stone), while a section of rhizome near the main root is smooth without stem marks (round reed).