We studied 101 flux emergence events ranging from small ephemeral regions to large emerging flux regions which were observed with Hinode Solar Optical Telescope filtergram .
We investigated how the total magnetic flux of the emergence event controls the nature of emergence .
To determine the modes of emergences , horizontal velocity fields of global motion of the magnetic patches in the flux emerging sites were measured by the local correlation tracking .
Between two main polarities of the large emerging flux regions with more than around 2 \times 10 ^ { 19 } Mx , there were the converging flows of anti-polarity magnetic patches .
On the other hand , small ephemeral regions showed no converging flow but simple diverging pattern .
When we looked into the detailed features in the emerging sites , irrespective of the total flux and the spatial size , all the emergence events were observed to consist of single or multiple elementary emergence unit ( s ) .
The typical size of unitary emergence is 4 Mm and consistent with the simulation results .

From the statistical study of the flux emergence events , the maximum spatial distance between two main polarities , the magnetic flux growth rate and the mean separation speed were found to follow the power-law functions of the total magnetic flux with the indices of 0.27 , 0.57 , and -0.16 , respectively .
From the discussion on the observed power-law relations , we got a physical view of solar flux emergence that emerging magnetic fields float and evolve balancing to the surrounding turbulent atmosphere .