The teacher said to Xu Jun: "Two years ago, my age was three times your age." Xu Jun said to the teacher: "In eight years, your age will be twice mine." Xu Jun is $\qquad$ years old this year.
(Method One)
2 years ago, the teacher's age was 3 times Xu Jun's age, the age difference was 2 times Xu Jun's age (3-1=2); 8 years later, the teacher's age will be 2 times Xu Jun's age, the age difference will be 1 time Xu Jun's age (2-1=1); 8 years later, Xu Jun's age will be 2 times his age 2 years ago;
8 years later, Xu Jun will be 10 years older than he was 2 years ago (2+8=10);
Xu Jun's age 2 years ago was $10 \div(2-1)=10$ years;
Xu Jun is $10+2=12$ years old this year.
(Method Two)
If from 2 years ago to 8 years later, the teacher ages an additional $(2+8) \times 2=20$ years, then 8 years later, the teacher's age will still be 3 times Xu Jun's age; 8 years later, Xu Jun's age will be $20 \div(3-2)=20$ years; Xu Jun is $20-8=12$ years old this year.