What is the relationship between Lu Lingfeng and the princess?

The princess and Lu Lingfeng don't know each other except the relationship between monarch and minister. Princess Taiping recognized Lu Lingfeng as her son in front of the flowers, and told Sue her first love, the secret past of Lu Lingfeng's father. /kloc-When she was 0/9 years old, she met a scholar named Yang Guan by Yishui. They fell in love at first sight, and then had a one-night stand on the night of Mid-Autumn Festival. The princess is pregnant with a scholar's child named Yang.

When the princess first met Lu Lingfeng, she always said that Lu Lingfeng was too human and asked Lu's age carefully. In the Chang 'an black tea case, Lu was the prince's man to deal with the princess. Lv Fan was imprisoned after solving the case, and the princess summoned him at this time and gave him a special reward. She also ordered Jinwu Prison to release Lu immediately and reward him according to his merits. This shows that the princess is very concerned about Lu Lingfeng.

When the princess learned that Lu Lingfeng was her long-lost child, she wanted to be acquainted with Lu Lingfeng, but she was afraid of being acquainted. After all, Lu Lingfeng has been completely brainwashed by Lujia. If you tell all the facts, it may only be counterproductive. As a result, until the finale, the princess and Lu Lingfeng still didn't know each other.