Science fiction is an amazing literature: plot elements that you would think would be completely worn out by now keep changing into surprising new forms.
The average session takes about one to two hours. It's totally amazing because when a person breathes they go through one stage of relaxation after another and every stage releases tension.
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Shanghai set out to take over from Hong Kong and I think it's done that. It's got the most amazing futuristic skyline which rivals and even betters Tokyo.