1, rockett's last direct appearance was in the lower part of the dark forest in three body 2. After the first three-body detector "Water Drops" was captured by the joint human fleet, Yi Ding and three other fleet officers took the shuttle boat of "Quantum" and went to "Mantis" for a close inspection of water drops. Finally, they died from the attack of water droplets and instantly evaporated in the ultra-high temperature near the sun's core.

2. The last indirect appearance of Rockett was in the fifth book "67 Years of the Bunker Age" of three body 3's "Death and Eternal Life". Bai Bing, a doctoral student of Ding Yi (formerly known as Bai Aisi), as a member of the formation to detect the light-speed objects (that is, two-way foils) emitted by alien spacecraft to the sun, fell into memories and nightmare warnings related to Ding Yi with confusion after contacting the two-way foils.