Second, you refused to sign a tourist visa because you concealed the facts when you applied for a tourist visa for the first time, which will make it difficult for you to apply for a job. I suggest you write a letter with sufficient reasons (such as this friend's understanding, etc.). And you know the reason), attach it to this application and try to communicate with the embassy in advance.
Thirdly, it is the most convenient to apply for a tourist visa even when visiting relatives and friends. The reason is also very simple. Generally speaking, visa officers only consider two points: whether you have enough funds to support your life in the UK, lest you have no money to go back to China and stay in the UK; Second, are you inclined to emigrate? Then, why do I say it is the most convenient to apply for a tourist visa? You know why!
Hope to adopt!