Classifier Instance:

Anchor text: Li Chunfeng
Target Entity: Li_Chunfeng
Preceding Context: Subsequent developments were made after the Han Dynasty that improved the use of the armillary sphere. In 323 CE the astronomer Kong Ting was able to reorganize the arrangement of rings on the armillary sphere so that the ecliptic ring could be pegged on to the equator at any point desired. Then
Succeeding Context: (李淳風) of the Tang dynasty created one in 633 CE with three spherical layers to calibrate multiple aspects of astronomical observations, calling them 'nests' (chhung). He was also responsible for proposing a plan of having a sighting tube mounted ecliptically in order for the better observation of celestial latitudes. However, it was Yi Xing (see below) in the next century who would accomplish this addition to the model of the armillary sphere. Ecliptical mountings of this sort were found on the armillary instruments of Zhou Cong and Shu Yijian in 1050, as well as Shen Kuo's armillary sphere of the later 11th century, but after that point they were no longer employed on Chinese armillary instruments until the arrival of the European Jesuits.
Paragraph Title: null
Source Page: Armillary sphere

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