MB --- Not revenue , its investment income based on a change in...

MB --- Not revenue , its investment income based on a change in fair value of the investment, There is a difference

From interim results IDG Energy

Note 2: According to accounting policy, the investment income stated here mainly includes (i) the investment income in the form offair value gain from the investment in Liquefied Natural Gas Limited (“LNGL”), details of which are disclosed in theannouncements of the Company dated 4 June 2018 and 13 June 2018, 

How do you measure the fair value change  ie a purported gain ?

cheers