I'm interested in exchanging written English (at any level) practice for written Chinese. You say your English is C2, which is already pretty advanced. If you have paragraphs you have written in English, I can provide proofreading and editing support, or just intelligent conversation. My Mandarin is only at A2 level, and I want to focus on reading skills. To make sure I get the tones right, I would rather start in Pinyin, and only later introduce characters for words I am very familiar with (because having to read unrestricted characters is ve-e-e-ry slow). If you are interested, I would like to communicate regularly, at least 2x a week. Are you interested? - Fred K.