actually if you study more, you will know
tourbillon is not that difficult to make with today technology,
1- you can easily copy others idea how to make it
2 - small parts can be cut precisely by CNC machine
3 - light material is easily and cheaply available
4 - to assemble it also not as difficult
the difficult part is to regulate it to super accurate to justify the selling price and the selling point ( tourbillon mechanism compensate gravity force for better watch accuracy )
more so - china producing ready made tourbillon movement like above... any brand also can buy it for their watch !
i strongly belief its much more difficult to design a chronograpah from scratch to function than a tourbillon !
anyway - its good that we all can have affordable tourbillon, the visual impact from the tourbillon casing turning is beautiful !
who really care about the accuracy ? the theory behind ?
AD says its complicated, its difficult to make, its designed to compensate the gravity force for better accuracy !
so buy 1 to blow water and show off your tourbillon... pointing the tourbillon cage turning to your friend is joyful !
even adding on tourbillon alike bridges to balance wheel and 'open heart' it can make the watch sells...
so... tq made in china