A criminal case with both direct and indirect evidences requires the integrality of the evidence chain of the whole case, while the case with only indirect evidences needs a closed evidence chain.

Theoretical analysis and indirect detection indicated that the pollen contamination rate of this pollination technique was no higher than 1%. But there is no evidence from direct detection by now.

The evidence from the Jiaodong Area of Shandong Province demonstrates both the direct and the indirect effects of RMB appreciation.