What if someone touches porcelain?

You are not touching porcelain, but tort liability. You have to pay for medical expenses, lost time, nursing expenses (medical advice requires nursing) and other expenses. However, his father's request for compensation for air tickets or lost time cannot be supported.

Tort liability law

Article 2 Whoever infringes upon civil rights and interests shall bear tort liability in accordance with this Law.

The civil rights and interests mentioned in this Law include personal rights and property rights such as the right to life, health, name, reputation, honor, portrait, privacy, marital autonomy, guardianship, ownership, usufructuary right, security right, copyright, patent right, trademark exclusive right, discovery right, stock right and inheritance right.

Article 3 The infringed party has the right to request the infringer to bear the tort liability.

Article 6 Where an actor infringes upon the civil rights and interests of others due to his fault, he shall bear the tort liability.

If the actor is presumed to be at fault according to the law, and the actor cannot prove that he is not at fault, he shall bear tort liability.

Article 7 Where an actor damages the civil rights and interests of others, regardless of whether the actor is at fault or not, if the law stipulates that he should bear tort liability, such provisions shall prevail.

Article 16 Anyone who infringes upon others and causes personal injury shall pay compensation for medical expenses, nursing expenses, transportation expenses and other reasonable expenses for treatment and rehabilitation, as well as the income reduced due to missed work. If it causes disability, it shall also compensate the disabled for living AIDS and disability compensation. If death is caused, funeral expenses and death compensation shall also be paid.