perfect pink juicy roast beef~~finally!!

I had just made a perfect pink juicy roast beef 2 minutes ago and i just cant wait to get this down!!!
finally after so many imperfect ones...
mind me! im still in my strict diet program, and this roast beef will last till end of next week for darlingslunch-steak sandwich!but as i was slicing it,cant help but stole a few bites and it was mmmmmmmmm~~~mama mia!

Ive always tried to follow what the recipe told me,but never seems to work.
so here are few tips:(San,thought u might wanna know it.)
doesnt matter how u marinate that meat loaf,
-first,cut a 3lb meatloaf into two and tight them together in a farely strong thread
place it on the rack in the pre-heated oven at 450 degC.
-about 30mins, take it out,cut the thread,let both of them lay apart,on each of them,cut about 3quarters deep from the raw side,in the middle.
-so strictly speaking,ur sort of cutting the meatloaf into 4pieces and let it roast for another 20 to 25mins depends on how well done u love ur tenderloin.

and

tada!~bon appetite!