Hi,
May I ask two questions here about charts?
In the first bar chart, how to make the size of the bar? I mean how to make it has the same size as the below one?
In the second chart, we have two bars to one area, but they didn`t share the same size. How to change it?

 You can add the following JSON code to alter the width of your bars.

plotOptions: {
            series: {
                pointWidth: 10
            }
        }

So you can set the following value to the AdvanceFormat property of your BarChart.

 

Mark Horenberg wrote:  Thank you so much! 
May I ask another question, in the second chart, the distance between the bars are different.
How can I set the bars and make they share the same distance?
 

You have some other options in JSON. See the next code sample. You should be able to affect them with these properties. You have to play with the values a bit, to see what fits your case.