Core Viewpoint - The article highlights the successful return of the Chinese aircraft carrier Shandong after a five-day visit to Hong Kong, showcasing the new carrier-based fighter jet J-15T, which was open to the public for the first time during this event [1] Group 1: J-15T Features and Design - The J-15T is an upgraded version of the J-15, specifically designed for catapult launches, featuring a unique design element known as the catapult traction rod [1][3] - The landing gear of the J-15T has been reinforced, with a 20% increase in the thickness of the support rods and a dual-wheel design for the main landing gear, which helps distribute pressure during landing and reduces friction on the carrier deck [3][5] Group 2: Tailhook Functionality - The tailhook is a critical component for carrier-based aircraft, enabling them to land on aircraft carriers by engaging with the arrestor wire to decelerate the aircraft rapidly [6][8] - The design of the tailhook must account for various factors, including impact resistance, overload tolerance, and wear resistance, to ensure successful landings [8][10]