Wikipedia
The Piya (; "Increased [Er]ya") was a Chinese dictionary compiled by Song Dynasty scholar Lu Dian ( 陸佃/陆佃, 1042-1102). He wrote this Erya supplement along with his Erya Xinyi (爾雅新義 "New Exegesis of the Erya") commentary. Although the Piya preface written by his son Lu Zai (陸宰/陆宰) is dated 1125, the dictionary was written earlier; Liu (1963:87) estimates around the Yuanfeng era (元豐, 1078–1085), and Joseph Needham (1986: 192) says around 1096.
Lu Dian arranged the Piya into 8 semantically based chapters that closely correspond with the last Erya chapters 13-19. The only exceptions are Chapter 5 ("Explaining Horses") that is contained in Erya 19 ("Explaining Domestic Animals") and Chapter 8 ("Explaining Heaven") that anomalously corresponds with the first part of the Erya.
Chapter
Chinese
Pinyin
Translation
Erya Chapter
1
釋魚
Shiyu
Explaining Fishes
16
2
釋獸
Shishou
Explaining Beasts
18
3
釋鳥
Shiniao
Explaining Birds
17
4
釋蟲
Shichong
Explaining Insects
15
5
釋馬
Shima
Explaining Horses
(19)
6
釋木
Shimu
Explaining Trees
14
7
釋草
Shicao
Explaining Plants
13
8
釋天
Shitian
Explaining Heaven
8
The preface explains Lu's motives for defining flora and fauna terminology. Since Song officials changed the basis for the Imperial examination from mastering poetry to jingyi (經義/经义 "expounding on a classical quotation"), literati no longer studied the lyrical names for plants and animals.