Mosquitoes Gorged Freely on His Blood

Wu Meng was eight years old and served his parents with extreme filiality. The family was poor, and their bed had no mosquito net. Every night in summer many mosquitoes bit him, gorging on his blood. But despite their numbers he did not drive them away, fearing that they would go and bite his parents. This is the extreme of love for parents.
In the Pear Deck: What did this child do to fulfill his responsibility of filial piety?

This child allowed mosquitoes to bite him and did not drive them away, in order to protect his parents from being bitten.