1, with white glue and special glue for imposition. Find yourself an iron sheet, make a small hole in the two sections, and put dry branches in the small hole instead of white glued bamboo shoots (small round sticks one or two centimeters long). These parts should also be coated with glue, but only a little.

2. pinch the good part and put it away until it dries. It is best to put the broken big head vertically on it to prevent degradation. Mainly to squeeze, don't let the cross section deformation.