CEO COLUMN
| No. | Published | Subject | Date |
| 3 | Mar-2019, [No.238] | The Way to Be Happy | 2021-11-30 |
| 2 | Feb-2019, [No.237] | Happiness and Unhappiness | 2021-11-30 |
| 1 | Jan-2019, [No.236] | A Company which encourages its employees to achieve their goals and be happy | 2021-11-30 |