631. Mental Maturity Means Emotional Stability

Work Hard in Silence Wait for the Miracle

Green Travel Makes City FresherProtect Nature Start Today

Water Pollution Threatens Human LifeDevelop Eco-Friendly LifestyleEnvironmental Protection Is Everyone’s Duty

Preserve Green Mountains and Clear WatersControl Noise Pollution Improve Living Environment

Simple Daily Moves to Protect the Earth

The Value of Natural Ecological EnvironmentHealthy Habits Accompany Life Long

Relieve Work Pressure EffectivelyScientific Sleep Improves Mental State

Fresh Air and Exercise Benefit HealthControl Desire Maintain Healthy Diet

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