Does anyone know anything about antiques? Help me look at some antiques. How much are they worth? Thank you!

The first manuscript should be from the late Qing Dynasty to the Republic of China, below 500 yuan.

The seal of the second emperor, this is just a seal, not a real imperial seal and so on. It should be worthless and can be used for research.

The third glass cup is not like an antique, but a modern handicraft, which costs tens of dollars.

Four or six paintings by Yu Hongda, vice chairman of Jiangsu Calligraphers Association and a contemporary painter, whose works are auctioned at a market price of more than 8,000 yuan.

The fifth jade horse, a modern handicraft, is less than 2000 yuan.