how to recover data from a broken mobile phone which has an inbuilt storage only My Lenovo Zuk z1 came under a bus and it broken into pieces. Is there any possible way from which I can recover some data from it as it contains some memorable moments of my nephew  adding that Zuk z1 does not have a external memory?
Yes, you can try Chip-off acquisition, physically removing (desoldering) the phone's flash memory chip and then use a specially tool Android Phone Datarecovery DS3000-USB3.0-emcp221.