Sandra Oh, the actress who portrayed Dr. Cristina Yang on Grey’s Anatomy, decided to leave the show after its 10th season. Her departure wasn't due to any friction or disagreement with the cast or the producers, but because she felt it was time for her to pursue other creative opportunities. In several interviews, Sandra Oh expressed that she desired to explore other aspects of her acting career and believed that her character's arc was coming to its natural conclusion. She felt that the character of Dr. Yang was given a respectful and satisfactory end, and that satisfied with her journey on the show. Oh's portrayal of Cristina Yang is one of the most popular in Grey's Anatomy's history, with the character's departure causing a significant disturbance among fans. However, Sandra Oh's decision to move on has proved fruitful for her career. After leaving Grey's Anatomy, she starred in the critically acclaimed BBC America series 'Killing Eve', where she garnered significant praise and awards recognition. To summarize, Sandra Oh’s departure from Grey’s Anatomy wasn't due to controversy or issues with the show. It was a career decision based on her desire to explore new roles and challenges in her acting career.