| 3. Property and Equipment, Net (Details Narrative) - USD ($) | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
| Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | |
| Property, Plant and Equipment [Abstract] | ||||
| Depreciation expense | $ 9,725 | $ 4,601 | $ 18,845 | $ 23,697 | 
| X | ||||||||||
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- References No definition available. 
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