Wen Tau Yu was studying to become a pharmacist before the Monterey Park shooting.

MONTEREY PARK, Calif. — Two of the men who died at the Star Ballroom Dance Studio in Monterey Park, where 11 people were fatally shot on Saturday, were aspiring to new goals in their 60s and 70s.

Wen Tau Yu, 64

Wen Tau Yu had recently begun going to school to become a pharmacist, his son, Szu Fa Yu, said in an interview.

“He was 64 years old and retired, but he was exploring his second career,” Mr. Yu said on Tuesday. “I really admire him for that.”

Mr. Yu remembered his father as someone who always strove to be his better self. “His books and notes are still lying around on the desk,” less than a month into the pharmacy program, he said. “It’s heartbreaking to see.”

He immigrated to the United States from Taiwan, where he was a manager at an agricultural company, according to Mr. Yu. “He had always supported our family,” he said, “We were very close. I learned a lot from him.”

The Yu family had a Lunar New Year gathering before his father went out with his friends to celebrate the occasion and never returned.

“We found it bizarre that he never came back,” Mr. Yu said. After hearing from his father’s friends that he never made it to lunch the next day, his family reported to the police that he was missing.

Mr. Yu said that if his father had been a dancer, he had not been aware. His family was unsure whether he had been killed inside the dance studio or while passing by.

On Monday, the Yus found themselves trying to cope with the news of the patriarch’s death. “I did not know what to do. I was in shock,” Mr. Yu said. “When I first found out, I just could not believe it. Now, the sadness is growing.”

Mr. Yu still finds himself waking up in the middle of the night. “I miss his nagging,” he said.

Mr. Yu added that he had not broken the news to his father’s mother, who is in her 90s and in poor health. “We are afraid that she won’t be able to handle it.”