If you can't find an episode or part thereof in a specific season then go to any episode that links to todou.com and is in the same season then click on the small title bar above the player and copy whats in it. It should be something like this: Numb3rs-数字追凶.第二季.07A then you just take off the 07A part and replace it with the epiosode you are looking for. Then copy this into the top search bar at the top of the page and hit enter. A new site with should open with the results of your search. There should only be one as your search was specific to one clip, click on this and a new window/tab opens up with the part of the episode you requested. As an example take this scenario: I've just watched the first part of episode 7 I want to watch the second half so I copy this: Numb3rs-数字追凶.第二季.07A turn it into this:Numb3rs-数字追凶.第二季.07B and then I paste it into the top search bar and hit enter. I click on the link and then watch the movie.

Hope this helped

-Danny