A subtype of the spatial relationship of laterality is mediality. Mediality is the overlapping space projected laterally from two or more reference objects which is occupied by a located object.
Tíngchēchǎng zài yīyuàn hé chāojí shìchǎng zhōngjiān.
(The parking lot is between the hospital and the supermarket.)
Cǎo zhōngjiān yǒu xǔduō huār.
(There were a lot of flowers in the grass.)
The state of affairs of (1a) is such that the located object ‘tíngchēchǎng’ (the parking lot) occupies the intersection of the space projected laterally from the two reference objects ‘yīyuàn hé chāojí shìchǎng’ (the hospital and the supermarket). In Chinese, the position word ‘zhōngjiān’ (between, among) does not require that the number of entities involved be precisely two. The fact that ‘zhōngjiān’ does not have a number restriction is reflected in (1b), in which, the reference object ‘cǎo’ (grass) must refer to a lot of grass.
 Loar, J. K. (2011). Chinese syntactic grammar: functional and conceptual principles. New York: Peter Lang.