Even Sum Sudoku (Daily Sudoku League #56)

Yesterday, I posted Picture Sudoku. It was like solving four Sudoku simultaneously. Do try it in case you have not yet downloaded and solved it.
Regarding today's Even Sum Sudoku, I tried to make it symmetrical as far as possible. When solving at the end to avoid multiple solutions, I have to add another greyed area in the center box which contains one given number as hints.
LMI August Beginners' Puzzle Contest started today. Please participate in this. This month's puzzles in this contest are Cave and Yajilin.

This Even Sum Sudoku is my 56th contribution to The League of Extraordinary Ladies and Gentlemen. Can you solve this Even Sum Sudoku puzzle?

Rules of Even Sum Sudoku

Classic Sudoku Rules apply. Additionally, the sum of digits in the two continuous horizontal or vertical greyed cells should be Even.