staying at Shangrila Luohu, Shenzhen, how to go to OCT East and how many attraction should I see.

You can take a taxi from your hotel to Menzhenbu bus stop. Ask the driver to drop you off exactly at the site where you can catch the shightseeing bus (观光线). Ride this bus and you can go to your destination directly.

I just know you will have a great view on the way by riding the bus, but not clear how many attractions it will pass.