Thank you mlesemann, indietalk, Quality. Your answers are in to the point and help me a lot.
I read indietalk answer. I was also had in mind the end of The Sixth Sense where there is the same thing,
but in the screenplay M.N. Shyamalan has only one flashback.
Then while I was thinking that switching between flashback and present thing,
I realized that it's not actually switching or intercutting but just interrupted quick flashes,
or quick flashes with gaps. So I guess the pure right way to write it is:
QUICK FLASHBACK
Bla bla.
BACK TO SCENE
ACTION (in present moment)
QUICK FLASHBACK
Bla bla.
BACK TO SCENE
ACTION (in present moment)
...
But this is boring for a reader.
I tend to believe that this is more of the directors job, whether it will be normal quick flashes or "interrupted".
I guess writer just has to stuck the flashes with a notice above, something like "as he watches..., he remembers.
BEGIN MONTAGE:
WHAM! Knuckles are a bit skinned.
A young Pai Mei is pushed down by a group of bigger bullies. Frightened, he cries.
WHAM! Knuckles are red and inflammed.
A young Pai Mei is pushed down again by the bullies. But this time he gets up. He gets punched down.
WHAM! Knuckles are beginning to bleed.
A young Pai Mei is pushed by the bullies but doesn't fall down. Instead he turns and in anger rushes the bullies who gang up on him punching him down to the ground.
WHAM! Knuckles are bloody.
A young Pai Mei is pushed by bullies but doesn't fall. Instead he turns and waits. One bully steps forward to punch him. Pai Mei blocks it but doesn't retaliate. The bully tries again and is blocked again. With a nod the bullies all rush Pai Mei fists flying.
WHAM! Knuckles are beginning to run and drip blood.
A young Pai Mei is pushed by bullies but it barely makes him move. They push again harder until finally Pai Mei stops and turns. A bully steps forward and attacks. Pai Mei deflects and retaliates in one single fluid motion. The bully drops. Another rushes in and is likewise felled. The rest of the bullies rush in and Pai Mei deftly deflects, redirects, sweeps past and otherwise buffets their attacks while retaliating only to the degree to leave his attackers sprawling in the dirt. He calmly turns and continues on his path.
WHAM! Knuckles are almost exposed to the bone and blood covers the whole hand.
END MONTAGE.
This reads to me as one continuous scene - is that what you intended?