After the Branch Master left, and Adam made sure that there was no way anybody was watching them or listening in to what was happening, he said to Su Lan that he had a few conditions that she had to agree to before he helped her.
The private recovery room that the Branch Master had led them to was one of many, and was essentially a small closed-off room without anything in it that had quite dense energy and was completely soundproof.
This way people could cultivate and recover within it freely, without distraction, and was perfect for Adam who didn't want to reveal much about himself, knowing that there were too many powerful and unknown figures out there.
Until he was could rival them in terms of power, revealing more about himself would only draw unwanted attention, and he wasn't looking to cause any complications or conflict.