The authors may want to have some brief discussion on more recent literature regarding China’s productivity estimates and policy related issues.
On the other hand, in the same line of text (pg. 4 line 3), the authors define the denominator of the agricultural labor productivity as the employed labors in the first sector. What does this first sector mean? Is it a synonymous of agricultural sector? If this “first sector” includes the fish workers, the agricultural labor productivity measures are not correct in the regions with sea access. In this case, it would be the primary sector labor productivity. The authors should also clarify if this sector included the forest products and labor.