Find the way home

One day, SpongeBob, Squidward Tentacles, Patrick Star, and Sandy met in the first quadrant forest. Suddenly, the forest got foggy and the four men were separated. So they asked the Qiongnong Rescue Team for help. As a warrior of the rescue team, can you help them find their way home?

Among the 64 grid points between $x$ - and $y$ -coordinates of 1 to 8, four points are their current positions: SpongeBob (2, 3), Squidward Tentacles (5, 1), Patrick Star (6, 1), Sandy (4, 4). Four other points are their homes: home of SpongeBob (6,6), home of Squidward Tentacles (8,1), home of Patrick star (3,7), home of Sandy. (1,8).

Find the route to each person's home according to the following rules:

1. Everyone has to find a way home.
2. Routes can only be connected horizontally or vertically, and cannot be crossed or split.
3. Each grid point can only be passed once.
4. All grid points need to be a route.

Who will pass the grid point (5, 5)?