Thank-you for all your help. Now to clarify the whole thing, I will state everything here:
There is only 5 clauses on my lease (on a scrap paper). The 4th one is the one that troubles me the most.
It states (translated from chinese): At anytime if either party (LL or tenant) decide to terminate this partnership, they may do so with prior notice(28 days), otherwise I won't get my deposit back.
It sound like the one-sided, but I did signed the lease. At that time, I thought I have the right to teminate her and decide not to continue living there, but never the other way around.
To this point, I still don't see a legitament in why she want me out other than...GREED. So she can rent the whole upstair out!
Tonight I did something very bold, I rang basement's door bell, pretend to be a potencial renter. A man opened the door, and is not one of her son. I asked the man who answered the door, how long he has been living here with his family, he said over 2 years. I asked if he is family to the owner, he said no.
That is a good thing on my behalf, because she is renting out her basement illegally. I also took the liberty to check on the Internet if she is a register renter. Lord behold, she is not.
In another word, if she ever did file tax reture, she may never put her rent money down as income, since she ask for cash only. (Cash only is not on the lease...I won't be paying her cash anymore)
So do I have more ground now? even though clause #4 may give her a upper hand. Since everthing she has done so far looks illegal, she should have no ground over me at all. Right???