Yes, there is a direct airport shuttle bus called the "Capital Airport Line" between Beijing Capital International Airport (PEK) and Beijing Daxing International Airport (PKX). There are 3 daily trips in each direction: PEK departs at 9:30/12:00/15:00, and PKX departs at 13:30/16:00/18:30. The fare is ¥55, with a travel time of approximately 1.5–2 hours. Tickets can be purchased at airport bus ticket offices or via the "Beijing Airport Bus" WeChat mini-program. Boarding points are Gate 7 on Level 1 of T3 Terminal (PEK) and Gate 20 on Level 1 (PKX).