...and Before OP Trashes The [Troll] Post

In re a post on Flute Forum about the difference between the concert flute and the Chinese flute (笛子):

Okay, assuming you are not trolling, both concert flutes and the dizi are from the same general family of edge-blown aerophones.

I won't talk about the concert flute because we're in the [Concert] Flute Forum.

The dizi is a member of the simple system flute, where pitch is controlled through tone holes that are covered by the fingers. Unlike most simple system flutes, the dizi stands out with the addition of a membrane hole that is affixed with a membrane derived from the interior of the reed using a water soluble adhesive.

This membrane, when affixed with the right tension, adds a characteristic buzz to the tone that gives the dizi its robust character as compared to other flutes of comparable size.

The dizi's relative tuning with itself by the tone holes have two main families, one being the diatonic scale, and the other being the traditional one, which is differentiated by the position and size of the fifth tone hole as counted from embouchure hole end first (diatonic has it shifted slightly closer embouchure hole-ward, while traditional has a more even spacing).

Dizi are often made of bamboo, and can come in a wide variety of sizes/pitch ranges, from around alto flute range all the way to garklein recorder range.

No matter the size, the dizi's effective range is usually 2 octaves and a second, and sometimes hitting 2 octaves and a sixth.

The most commonly seen dizi are usually nearer the piccolo range, or the alto recorder range. More modern [Chinese orchestral] pieces may use additional dizi nearer the concert flute range.

The function of the dizi is usually quite different from that of the concert flute -- its strident but sweet tone usually means that it is often one of the leading melody lines in musical pieces.

All flute techniques are applicable to the dizi, with chromatic runs being among the harder things to pull off on the dizi.

Some advanced techniques on the dizi are impossible to play on the concert flute -- like 飞指 (rapid sliding of the the fingers up and down along the tone holes), and using the closest tone hole as an embouchure hole for a haunting effect while using the rest of the tone holes for pitching.

Even though the dizi is usually cheaper than a concert flute by monetary value, finding a high quality concert flute is ironically much eaiser than finding a high quality dizi.

That's because a high quality dizi requires bamboo of high density, and that material is getting increasingly harder to get due to increased global temperatures.

Bamboo is a fast-growing grass, and the higher the overall ambient temperature, the faster it grows, leading to decreased density.

Hope this helps!