"Because he's not responsible for anything," Xue Yan continued, "So, no matter who sends a letter to him, he won't register it or give any receipt. He won't even read it. You just need to put the letter and money down. The recipient's residence and name should be clearly written on the envelope. When they send a letter, they will only read the address for the envelope."
He paused for a moment before continuing, "All the letters to the Imperial Capital are placed in a large wooden box. On the way, the letters from the other state capitals that were sent to the Imperial Capital were also placed in that large box. They will be sent to the Imperial Capital as well. If we let his family send the letters, even if they investigate, there will be too many letters and his family won't even know where this letter will come from. It'll be like-"
"Looking for a needle in a haystack?" Jiang Yue finally spoke.
"I guess so." Xue Yan nodded with a smile.