Complex sentence: In the Northern Song period the Dayao (大窯) kiln site near Longquan city alone produced wares at twenty-three separate kilns; with Jincun nearby, these appear to have been the largest kiln complexes, and produced the best wares.
Split into simpler sentences: In the Northern Song period, the Dayao (大窯) kiln site near Longquan city produced wares at twenty-three separate kilns. Dayao and Jincun appear to have been the largest kiln complexes of the period; these kilns produced the best wares.