1. Canceled Without Prejudice - ZT 2. 能再去签

Don't worry... Everytime I applied for a new visa they would stamp same way my old ones... maybe they do it so it is easier for them when they check passport. I think I have 5 visas in my passport hehe... if they were not stamped it would be really hard to find the good one...

Cancelled without prejudice simply means you didnt do anything wrong...