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Pairwise Granger Causality Tests   
Date: 01/18/13   Time: 21:18   
Sample: 1986 2009   
Lags: 1   
   
 Null Hypothesis: Obs F-Statistic Prob. 
   
 LNXIAOFEI does not Granger Cause LNSHOURU  23   7.16104  0.0145
 LNSHOURU does not Granger Cause LNXIAOFEI  23   2.66405  0.1183
   
是不是双向因果关系啊