As my indoor bamboo tree grew, it became unstable. So, in addition to the vertical support pole placed at the bottom, a horizontal support pole was installed at the middle.
An unfortunate accident caused one of the 2 baby branches to completely fall off. Miraculously, a new one came out from the dead socket. So, the bamboo tree now has 2 branches vertically growing up as if nothing has happened, while the original stem at the middle is dying.