(2) Measurement points should not be too close to the combustion point or nozzle, as the gases in these areas are undergoing intense reactions, which can cause the oxygen sensor to fluctuate and distort its readings. Also, avoid placing them too near to ventilation fans or other gas-producing equipment to prevent the motor's vibrations from scratching the sensor. Keep away from collision-prone areas to avoid damaging the probe upon impact, ensuring the safety of the sensor. The quality of China's educational system, or more accurately, its shortcomings, is also a factor contributing to more students studying abroad. Despite China's economic development and prosperity, its educational system has not developed well. Many Chinese complain that the rote learning system in China ignores the importance of creativity, innovation, and critical thinking, thus hindering China's progress in invention and breakthroughs.