Sale of 1000 cases of apples, CIF New York, late the dispute arises and B (USA) sues S (PRC) for lack of quantity. Now the case has been brought into the court.

Questions:

1. What kind of law could be used to solve the dispute by the judge? Use the PRC contract law or American law?

2. B sues the S for the non-arrangement of insurance. Which rule/law will be applied?

3. Now the question is on the validity of contract, which rule/law will be applied?