The advice on this forum is so bad. So often. http://www.sinosplice.com/learn-chinese/pronunciation-of-mandarin-chinese/4

The essentials of the articulation of 'j', (('q')), 'x' in Mandarin are 3 points: which parts of the tongue and the palate that touch or get close to each other; Consequently how the airblow is checked and released; whether there is strong airblow going through the contact/close spots(aspirated or not). ///////////////// So we can pronouce by imitation of and comparison with the standard sounds of the target language (Mandarin). And there is another important comparison: with the similar sounds in your native language(s) or other foreign languages that we know. They are where we begin to articulate. ///////////////// As for 'j', (('q')), 'x' in Mandarin, we can compare like this: x(Madarin)-----s, or sh(English); j-----ch. Each of the latter sounds can work as the beginning of our articulation. Try and Error. Just keep adjusting the 3 points of articulation as you are trying and keep comparing the sounds that you made with the standard ones, untill we get the satisfatory results.

Do you know the number of '7' for chinese pronuncation. same with q

The essentials of the articulation of 'j', (('q')), 'x' in Mandarin are 3 points: which parts of the tongue and the palate that touch or get close to each other; Consequently how the airblow is checked and released; whether there is strong airblow going through the contact/close spots(aspirated or not). ///////////////// So we can pronouce by imitation of and comparison with the standard sounds of the target language (Mandarin). And there is another important comparison: with the similar sounds in your native language(s) or other foreign languages that we know. They are where we begin to articulate. ///////////////// As for 'j', (('q')), 'x' in Mandarin, we can compare like this: x(Madarin)-----s, or sh(English); j-----ch. Each of the latter sounds can work as the beginning of our articulation. Try and Error. Just keep adjusting the 3 points of articulation as you are trying and keep comparing the sounds that you made with the standard ones, untill we get the satisfatory results.

Cccc