The ban on ICO gave a dip in the graph of Bitcoin but it was temporary and it clearly depicts that weather it the super-hub of Bitcoin nothing can stop it from rising again. Also, in the hard time Japan was very supportive to Bitcoin which helped it to stand again.  Moreover, the ban was temporary because in the recent news it was discovered that ICO will be back in power with proper rules and regulations because at the end China also knows the potential and value of Bitcoin and can't afford to lose that.