The problem of geology is that the shale areas are in areas that are dry, and you need to pump an exorbitant amount of water to push the oil out. Water that can be used for agriculture instead such as turning deserts into green land. Precious water from China's rivers and water tables, not to mention the Mekong that supplies water to neighboring South East Asian countries.How is China's shale gas exploration going along? China has more shale gas than the US, but with existing technology, the geology is too complicated to be economical.
Not to mention that fracking increases the amount of earthquakes, and that's not a good idea in areas like the Sichuan province which is also one of those areas that have shale oil but has a past history of catastrophic earthquakes.
IMO, pursuit of shale oil in China is debatable for ecological reasons, and its even debatable in the US for ecological reasons, given the depletion of water tables in the US --- water tables that are vastly important for US agriculture--- and the increased occurrence of small earthquakes. IMO, US shale oil is another sign of the US selling its future away for shortsightedness.
China should pursue alternative energy sources instead, like solar, wind, hydro and not the least, nuclear. Give rise to the replacement of internal combustion engine cars to electric.