Prince William deeply feels Kate Middleton's absence in Wales

Prince William could not hide his emotions as he made a solo trip to Wales on Monday to attend an event amid his sweet wife Kate Middleton's ongoing cancer treatment.

The Prince of Wales's eyes were telling the true story of his heart as Kate was not with him to the journey of their favorite state following her cancer diagnosis.

The future King traveled to Cardiff by train, with a photo of his trip shared on social media showing the royal looking out the window with a phone and monogrammed binder on the table before him.

In the picture, teary eyed William appears missing Kate while travelling to the city of Wales.

William also recalled a childhood golfing accident that left him with a scar on his forehead as he was shown the company's golf tee made from seaweed during the trip.

"He was looking at the prototype, and I asked him if he likes golfing. He injured himself famously as a kid and pointed to his head and said, 'No golf for me.' No golfing for him!," Pierre Paslier of Notpla told PEOPLE.

William appeared in good spirits during the visit, but he definitely felt the absence of his sweet wife Princess Kate who always attracts the spotlight with her evergreen smile and heart-melting gestures to her fans.