NBTea suggests most of Japanese green teas 80C-2 min, most of Chinese greem teas 75C-3min.
I have scanned (so, I might be wrong) an article somewhere(wikipedia?) that Chinese and Japanese teas are made very differently. Chinese green teas are fried in the beginning. Japanese teas are not.
Meamwhile, in my cup I have
Shu Pu-Erh 
After rib-eye
stake---
rare
Later I will try the next green sample. Probably Ceylon Mammoth.
Or was it Oliphant?
I was pleasantly surprised today

I have found a shop--
Oriental food and souvenirs.
They have loose leaf tea!
Japanese Sencha tea.
Chinese Green and Oolong teas.
They also have a variety of proper tea-things? but I am not that advanced. I am after flavours only for now. I need to wisen up for more. Time will tell.
Nonetheless, I am very excited about their tea though. I also liked a lady who works there. I think her parents are from China but I think she was born here because her English is perfect. I think she understands about teas. Most likely she knows more than I do