Abstract：‘Nongfeng 70 tiancaixin’is a new flowering Chinese cabbage F1 hybrid developed by using Ogura cytoplasmic male sterility line‘LN-20’as female parent and inbred line‘Linong No.27’as male parent．It is of medium maturity，and takes about 40 days from sowing to first harvest．It is of erect plant type．The average plant height is 30.3 cm，and spreading degree is 20.0 cm．Its leaf blade is of oval shape，dark green in color and glossy．The average leaf length is 24.9 cm，leaf width is 8.2 cm and petiole length is 6.4 cm．It is stout and well-proportioned with short petioles，tight，crispy and sweet meat．Its average plant height is 27.6 cm with 2.1 cm transverse diameter and 68 g single plant weight．The VC content is 166.2 mg · kg-1，soluble solid content is 3.0%，and crude protein content is 1.32%．It has strong growth vigor with neatly bolting．It can yield about 19.5 t · hm-2．It is suitable for planting in plain areas of Guangdong Province．
