Hi minghang,
Having a bi-weekly payment does not affect the PR application.
Under the CEC, the applicant is not required to demonstrate settlement funds.
You may go through the following link for further understanding the selection criteria, Qualifying work experience under CEC category
http://www.cic.gc.ca/english/resources/tools/perm/econ/cec/work.asp
and the topic in this forum:
http://www.canadavisa.com/canada-immigration-discussion-board/minimum-salary-requirement-for-cec-t163829.0.html