Compare your sentence with these (natural American English): Peter was so excited because he received an invitation from his friend to visit Chongqing. (tells why Peter was excited) Peter was so excited when he received an invitation from his friend to visit Chongqing that he jumped up and down and threw his hat in the air. )
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wangqh2696122 But, according to macmillan english dictionary, "that" seems can be used in this way. See:used when explaining why someone feels sad, angry, happy etcI’m sorry that I missed the first meeting.I am absolutely delighted that we achieved what we set out to do.Yes, that is true when the subject in the second clause is different from the main clause
wangqh2696122 Is "that" correctly used in "Peter was so excited that he received an invitation from his friend to visit Chongqing."?"that" is OK, but there's a problem with "so". It is more natural to say,