for those who count on short, there is a theory : 1.6660 - 1.6630 - 1.6600, breaking each line will increase the power of short, and 1.6600 breaking will be final break...
http://www.buzzfocus.com/wp-content/...k-final-br.jpg
http://www.buzzfocus.com/wp-content/...k-final-br.jpg