yesterday at city hall I found CHI grimdisease, he was at the top of cliff.. but place there I saw him I tried to jump there but thats not possible for me..

see that 1:20 ? wtf I tried this 1000x times, no way
http://www.youtube.com/watch?v=KUUqR5s5g14&context=C396deddADOEgsToPDskJjUCLnyAyFjQZRLtN8MI86

this way works for me:
http://www.youtube.com/watch?v=lQDOfGQ-nCw&feature=context&context=C396deddADOEgsToPDskJjUCLnyAyFjQZRLtN8MI86

If someone knows how to do that, please upload fraps movie