How to send invitations to friends abroad?

According to the regulations of the Consular Department of the Ministry of Foreign Affairs of China, you can just send her an invitation letter. But this rule is very principled. It is not easy for Cubans to go abroad. Maybe you should send her a formal translated and notarized Spanish invitation letter (with her full name written on it), and then she can apply for a passport and exit permit (PERMISO DE SALIDA, which is necessary for Cubans to go abroad, otherwise she can't go abroad even with a foreign visa). We can't control this, mainly because she is doing it there. After these things, she will take your invitation letter to the Consular Section of the China Embassy in Cuba to apply for a visa. However, to apply for a China tourist visa (L-visa), you must provide proof that you have enough travel expenses to China, and if necessary, you must also provide an air ticket to that country (region) after leaving China. I think to be on the safe side, you should also write an invitation letter to the Consular Section of the China Embassy in Cuba, with her full name and passport number, preferably Cuban ID number and her date of birth, and attach a copy of your ID card or China passport to prove that you are from China. Write clearly in the invitation that you are willing to bear the expenses of your friend during his stay in China. It is best to have proof of work and income (such as payroll). Generally, Cubans can't afford to travel to China, so the biggest problem is air tickets. If you can submit her round-trip ticket certificate to China (at least the reservation certificate), you may be more sure to get a visa. In addition to the passport and the above materials, she should also submit 1 recent, positive and bareheaded passport photos when applying for a visa (life photos, photo copies or digital photos printed on ordinary paper are not accepted, so it is better to prepare more copies for later use). If you pass, you will bring a visa fee of 10CUC (Cubans 10CUC, other countries 30CUC) when you get the visa.