The 7-hole dizi is a modification of the standard 6-hole dizi to account for the greatly increased distance between the tone holes that are originally covered by the right ring finger and right middle finger (in orthodox stance) when the dizi is at the length of the dadi. Other than recalibrating the right hand to make use of the four fingers, the techniques are more or less the same as that of the 6-hole dizi.
The downloadable version for the chart follows exactly the same format as the 12-tone fingering chart for the 6-hole dizi---refer to that article for details on how to interpret and use the chart.
Note that a tremolo chart is not provided---any specific tremolo can be inferred from the 6-hole dizi tremolo fingering chart, with the following adjustments for tone hole 2 on 6-hole dizi and tone holes 2--3 on the 7-hole dizi:
|6-hole dizi pattern||7-hole dizi pattern|
|0.||654 321||765 4321|
|1.||--- -O-||--- -OO-|
|2.||--- -O-||--- -OX-|
|3.||--- -v-||--- -XO-|
|4.||--- -X-||--- -XX-|
Note that in the preceding table, there are two different ways of translating from empty tone hole 2 to the 7-hole dizi equivalent. The first is preferable because it vents fully, but the second one is acceptable if tone hole 3 of the 6-hole dizi is vented.