Can one enter Shenzhen from Hong Kong with a Special Economic Zone visa despite having a non-fully utilized, still valid Chinese L (tourist) visa? If it is possible, will the Chinese L (tourist) visa be voided?
Motivation: for citizens of many countries, Chinese L (tourist) visa are limited to one or two entries, and typically one entry allows a stay of up to 30. Using a Special Economic Zone visa would allow to avoid exhausting the number of permitted entries when just visiting a Chinese Special Economic Zone for a few days.