It isn't clear that this is a blind spot. IMO, more like the PLA concept of Grand Tactics (in the Napoleonic sense; Operations in modern US usage). That is, the way they bring the enemy to battle.
It looks to the onlooker as if the PLA has taken a conscious turn towards 'de-personalising' the close; that it prefers a long-distance engagement, with a heavy dependence on electronic warfare, and weapons to suit that approach. By the time hostile units reach a 20 to 30 kms range, they would have been subject to sustained attrition due to stand-off weapons hitting them from 200 kms inwards.
Even their paradigm of close-range battle is unsettling; apparently, it is assumed that no detailed battle-planning is useful, as battle plans fall apart so rapidly, so instead, unit commanders - field officers and their immediate superiors of general rank - get certain broad principles instilled in them, through constant training, and left to craft their battle-field decisions based on those principles.
This is a possibility that has been constructed by Anglo-American analysts out of their deep study of available Chinese documents, but nobody has any confirmation that these models exist or that they are followed.
Since 2016, when China launched the largest military reform in its history, the entire Chinese military has completely changed. The Chinese call this military reform “还债 debt repayment”.
However, people usually pay more attention to the changes in PLAAF and PLAN, and most people ignore the changes in PLAGF. So we don't know much.
1, Light Infantry to Special Forces. The PLAGF has now phased out the light infantry service (a small number of light infantry are retained in the Sino-Indian Border Force). The Army has entered the era of fully mechanized information technology. Each group army has a special operations brigade under it, which is used to carry out combat tasks that are not suitable for mechanized forces.
2, Many of the tactics that PLAGF used to use historically have now changed. Some tactics have been eliminated, some tactics have been upgraded, and some tactics have fused into the tactics of the Special Forces.The PLAGF's current training intensity is so high, and there are so many tactical changes, that it is difficult for us to describe current PLAGF tactics.
3. From the current TV exposure of PLAGF training, PLAGF has a lot of modern advanced equipment. Modern equipment such as man-portable computers, UAV/FPV, and robot dogs are very common in PLAGF.
Since the PLAGF is not equipped with this weapon system, it is only for export, so I am not sure of its export code.
Chinese military fans consider it a very old weapon. We don't really like it, so, we don't follow its news. I just checked and China does have an export artillery piece called “AH4”. So, maybe that's it.