Hello, could you tell me the detail of each attraction in Harbin, please?

Hi travelmates,
I will be visiting next 24 Jan 2018.
But I still confuse about the name of each attraction. So I learn there are:
Ice & Snow Festival, Ice & Snow World (are they the same?), International Snow Sculpture Art Expo Hall, Ice Lantern Festival, Polar Land, etc.
Which are located in Sun Island?

And the most important is...
Which the attractions that will be perfect to enjoy at night?
I do want to take some great pics when the ice sculptures are illuminated by colourful lights.
Thanks a lot and have a nice day!