using general template expression is better.
Merge branch 'react_trans_GIA' of github.com:HaibingShao/ogs into react_trans_GIA
changing the name of _ReductCont to _user_dat.
do not need this in the final version.
resize the matrix will keep it clean.
Merge branch 'react_trans_GIA' of github.com:HaibingShao/ogs into react_trans_GIA